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Finding the Fourth Proportional to 99,073.42, 136,752.60 and 66,854.86

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Solution

The fourth proportional to 99,073.42, 136,752.60 and 66,854.86 is: 92,280.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,073.42 : 136,752.60 = 66,854.86 : x
  2. Step 2: Convert to fraction form
    99,073.42/136,752.60 = 66,854.86/x
  3. Step 3: Cross multiply
    99,073.42x = 136,752.60 × 66,854.86
  4. Step 4: Simplify right side
    99,073.42x = 9,142,575,927.64
  5. Step 5: Solve for x
    x = 9,142,575,927.64/99,073.42
  6. Step 6: Final answer
    x = 92,280.81

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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.