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Finding the Fourth Proportional to 99,765.66, 137,704.68 and 58,967.58

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Solution

The fourth proportional to 99,765.66, 137,704.68 and 58,967.58 is: 81,391.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,765.66 : 137,704.68 = 58,967.58 : x
  2. Step 2: Convert to fraction form
    99,765.66/137,704.68 = 58,967.58/x
  3. Step 3: Cross multiply
    99,765.66x = 137,704.68 × 58,967.58
  4. Step 4: Simplify right side
    99,765.66x = 8,120,111,734.27
  5. Step 5: Solve for x
    x = 8,120,111,734.27/99,765.66
  6. Step 6: Final answer
    x = 81,391.85

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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.