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Finding the Fourth Proportional to 116,504.38, 174,931.53 and 66,640.78

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Solution

The fourth proportional to 116,504.38, 174,931.53 and 66,640.78 is: 100,061.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,504.38 : 174,931.53 = 66,640.78 : x
  2. Step 2: Convert to fraction form
    116,504.38/174,931.53 = 66,640.78/x
  3. Step 3: Cross multiply
    116,504.38x = 174,931.53 × 66,640.78
  4. Step 4: Simplify right side
    116,504.38x = 11,657,573,605.79
  5. Step 5: Solve for x
    x = 11,657,573,605.79/116,504.38
  6. Step 6: Final answer
    x = 100,061.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.