Home / 99,645.21-137,432.61-63,838.53

Finding the Fourth Proportional to 99,645.21, 137,432.61 and 63,838.53

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Solution

The fourth proportional to 99,645.21, 137,432.61 and 63,838.53 is: 88,047.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,645.21 : 137,432.61 = 63,838.53 : x
  2. Step 2: Convert to fraction form
    99,645.21/137,432.61 = 63,838.53/x
  3. Step 3: Cross multiply
    99,645.21x = 137,432.61 × 63,838.53
  4. Step 4: Simplify right side
    99,645.21x = 8,773,495,796.46
  5. Step 5: Solve for x
    x = 8,773,495,796.46/99,645.21
  6. Step 6: Final answer
    x = 88,047.34

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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.