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Finding the Fourth Proportional to 91,680.00, 137,492.03 and 63,398.80

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Solution

The fourth proportional to 91,680.00, 137,492.03 and 63,398.80 is: 95,078.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,680.00 : 137,492.03 = 63,398.80 : x
  2. Step 2: Convert to fraction form
    91,680.00/137,492.03 = 63,398.80/x
  3. Step 3: Cross multiply
    91,680.00x = 137,492.03 × 63,398.80
  4. Step 4: Simplify right side
    91,680.00x = 8,716,830,041.93
  5. Step 5: Solve for x
    x = 8,716,830,041.93/91,680.00
  6. Step 6: Final answer
    x = 95,078.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.