Home / 127,178.43-175,506.35-76,220.76

Finding the Fourth Proportional to 127,178.43, 175,506.35 and 76,220.76

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Solution

The fourth proportional to 127,178.43, 175,506.35 and 76,220.76 is: 105,184.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,178.43 : 175,506.35 = 76,220.76 : x
  2. Step 2: Convert to fraction form
    127,178.43/175,506.35 = 76,220.76/x
  3. Step 3: Cross multiply
    127,178.43x = 175,506.35 × 76,220.76
  4. Step 4: Simplify right side
    127,178.43x = 13,377,227,000.72
  5. Step 5: Solve for x
    x = 13,377,227,000.72/127,178.43
  6. Step 6: Final answer
    x = 105,184.72

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Half scale
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Double scale
Find fourth proportional to 127,179.43, 175,507.73 and 76,221.76
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.