Home / 156,930.35-216,565.25-85,310.42

Finding the Fourth Proportional to 156,930.35, 216,565.25 and 85,310.42

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Solution

The fourth proportional to 156,930.35, 216,565.25 and 85,310.42 is: 117,729.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,930.35 : 216,565.25 = 85,310.42 : x
  2. Step 2: Convert to fraction form
    156,930.35/216,565.25 = 85,310.42/x
  3. Step 3: Cross multiply
    156,930.35x = 216,565.25 × 85,310.42
  4. Step 4: Simplify right side
    156,930.35x = 18,475,270,925.53
  5. Step 5: Solve for x
    x = 18,475,270,925.53/156,930.35
  6. Step 6: Final answer
    x = 117,729.12

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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.