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Finding the Fourth Proportional to 100,759.72, 139,033.74 and 60,464.92

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Solution

The fourth proportional to 100,759.72, 139,033.74 and 60,464.92 is: 83,432.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,759.72 : 139,033.74 = 60,464.92 : x
  2. Step 2: Convert to fraction form
    100,759.72/139,033.74 = 60,464.92/x
  3. Step 3: Cross multiply
    100,759.72x = 139,033.74 × 60,464.92
  4. Step 4: Simplify right side
    100,759.72x = 8,406,663,966.40
  5. Step 5: Solve for x
    x = 8,406,663,966.40/100,759.72
  6. Step 6: Final answer
    x = 83,432.78

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1.5x scale

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.