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Finding the Fourth Proportional to 127,807.25, 176,353.25 and 74,081.76

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Solution

The fourth proportional to 127,807.25, 176,353.25 and 74,081.76 is: 102,220.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,807.25 : 176,353.25 = 74,081.76 : x
  2. Step 2: Convert to fraction form
    127,807.25/176,353.25 = 74,081.76/x
  3. Step 3: Cross multiply
    127,807.25x = 176,353.25 × 74,081.76
  4. Step 4: Simplify right side
    127,807.25x = 13,064,558,771.31
  5. Step 5: Solve for x
    x = 13,064,558,771.31/127,807.25
  6. Step 6: Final answer
    x = 102,220.80

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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.