Home / 156,930.53-235,454.12-72,731.03

Finding the Fourth Proportional to 156,930.53, 235,454.12 and 72,731.03

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Solution

The fourth proportional to 156,930.53, 235,454.12 and 72,731.03 is: 109,123.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,930.53 : 235,454.12 = 72,731.03 : x
  2. Step 2: Convert to fraction form
    156,930.53/235,454.12 = 72,731.03/x
  3. Step 3: Cross multiply
    156,930.53x = 235,454.12 × 72,731.03
  4. Step 4: Simplify right side
    156,930.53x = 17,124,820,301.69
  5. Step 5: Solve for x
    x = 17,124,820,301.69/156,930.53
  6. Step 6: Final answer
    x = 109,123.57

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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.