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Finding the Fourth Proportional to 127,047.70, 175,401.86 and 79,365.64

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Solution

The fourth proportional to 127,047.70, 175,401.86 and 79,365.64 is: 109,572.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,047.70 : 175,401.86 = 79,365.64 : x
  2. Step 2: Convert to fraction form
    127,047.70/175,401.86 = 79,365.64/x
  3. Step 3: Cross multiply
    127,047.70x = 175,401.86 × 79,365.64
  4. Step 4: Simplify right side
    127,047.70x = 13,920,880,876.09
  5. Step 5: Solve for x
    x = 13,920,880,876.09/127,047.70
  6. Step 6: Final answer
    x = 109,572.08

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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.