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Finding the Fourth Proportional to 99,397.80, 137,165.84 and 54,074.62

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Solution

The fourth proportional to 99,397.80, 137,165.84 and 54,074.62 is: 74,621.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,397.80 : 137,165.84 = 54,074.62 : x
  2. Step 2: Convert to fraction form
    99,397.80/137,165.84 = 54,074.62/x
  3. Step 3: Cross multiply
    99,397.80x = 137,165.84 × 54,074.62
  4. Step 4: Simplify right side
    99,397.80x = 7,417,190,778.84
  5. Step 5: Solve for x
    x = 7,417,190,778.84/99,397.80
  6. Step 6: Final answer
    x = 74,621.28

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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.