Home / 129,295.71-178,434.14-71,935.34

Finding the Fourth Proportional to 129,295.71, 178,434.14 and 71,935.34

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Solution

The fourth proportional to 129,295.71, 178,434.14 and 71,935.34 is: 99,274.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,295.71 : 178,434.14 = 71,935.34 : x
  2. Step 2: Convert to fraction form
    129,295.71/178,434.14 = 71,935.34/x
  3. Step 3: Cross multiply
    129,295.71x = 178,434.14 × 71,935.34
  4. Step 4: Simplify right side
    129,295.71x = 12,835,719,276.66
  5. Step 5: Solve for x
    x = 12,835,719,276.66/129,295.71
  6. Step 6: Final answer
    x = 99,274.13

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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.