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Finding the Fourth Proportional to 99,539.80, 137,316.54 and 63,701.08

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Solution

The fourth proportional to 99,539.80, 137,316.54 and 63,701.08 is: 87,876.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,539.80 : 137,316.54 = 63,701.08 : x
  2. Step 2: Convert to fraction form
    99,539.80/137,316.54 = 63,701.08/x
  3. Step 3: Cross multiply
    99,539.80x = 137,316.54 × 63,701.08
  4. Step 4: Simplify right side
    99,539.80x = 8,747,211,899.86
  5. Step 5: Solve for x
    x = 8,747,211,899.86/99,539.80
  6. Step 6: Final answer
    x = 87,876.53

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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.