Home / 102,572.42-141,438.35-66,695.90

Finding the Fourth Proportional to 102,572.42, 141,438.35 and 66,695.90

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Solution

The fourth proportional to 102,572.42, 141,438.35 and 66,695.90 is: 91,967.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,572.42 : 141,438.35 = 66,695.90 : x
  2. Step 2: Convert to fraction form
    102,572.42/141,438.35 = 66,695.90/x
  3. Step 3: Cross multiply
    102,572.42x = 141,438.35 × 66,695.90
  4. Step 4: Simplify right side
    102,572.42x = 9,433,358,047.77
  5. Step 5: Solve for x
    x = 9,433,358,047.77/102,572.42
  6. Step 6: Final answer
    x = 91,967.78

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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.