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Finding the Fourth Proportional to 99,692.57, 137,497.95 and 63,885.91

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Solution

The fourth proportional to 99,692.57, 137,497.95 and 63,885.91 is: 88,112.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,692.57 : 137,497.95 = 63,885.91 : x
  2. Step 2: Convert to fraction form
    99,692.57/137,497.95 = 63,885.91/x
  3. Step 3: Cross multiply
    99,692.57x = 137,497.95 × 63,885.91
  4. Step 4: Simplify right side
    99,692.57x = 8,784,180,971.39
  5. Step 5: Solve for x
    x = 8,784,180,971.39/99,692.57
  6. Step 6: Final answer
    x = 88,112.70

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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.