Home / 91,981.90-137,644.80-63,769.60

Finding the Fourth Proportional to 91,981.90, 137,644.80 and 63,769.60

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Solution

The fourth proportional to 91,981.90, 137,644.80 and 63,769.60 is: 95,426.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,981.90 : 137,644.80 = 63,769.60 : x
  2. Step 2: Convert to fraction form
    91,981.90/137,644.80 = 63,769.60/x
  3. Step 3: Cross multiply
    91,981.90x = 137,644.80 × 63,769.60
  4. Step 4: Simplify right side
    91,981.90x = 8,777,553,838.08
  5. Step 5: Solve for x
    x = 8,777,553,838.08/91,981.90
  6. Step 6: Final answer
    x = 95,426.97

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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.