Home / 156,425.71-234,708.34-72,140.63

Finding the Fourth Proportional to 156,425.71, 234,708.34 and 72,140.63

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Solution

The fourth proportional to 156,425.71, 234,708.34 and 72,140.63 is: 108,243.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,425.71 : 234,708.34 = 72,140.63 : x
  2. Step 2: Convert to fraction form
    156,425.71/234,708.34 = 72,140.63/x
  3. Step 3: Cross multiply
    156,425.71x = 234,708.34 × 72,140.63
  4. Step 4: Simplify right side
    156,425.71x = 16,932,006,746.73
  5. Step 5: Solve for x
    x = 16,932,006,746.73/156,425.71
  6. Step 6: Final answer
    x = 108,243.12

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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.