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Finding the Fourth Proportional to 99,319.64, 137,063.96 and 60,559.74

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Solution

The fourth proportional to 99,319.64, 137,063.96 and 60,559.74 is: 83,574.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,319.64 : 137,063.96 = 60,559.74 : x
  2. Step 2: Convert to fraction form
    99,319.64/137,063.96 = 60,559.74/x
  3. Step 3: Cross multiply
    99,319.64x = 137,063.96 × 60,559.74
  4. Step 4: Simplify right side
    99,319.64x = 8,300,557,597.69
  5. Step 5: Solve for x
    x = 8,300,557,597.69/99,319.64
  6. Step 6: Final answer
    x = 83,574.18

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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.