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Finding the Fourth Proportional to 91,392.68, 137,019.54 and 63,237.90

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Solution

The fourth proportional to 91,392.68, 137,019.54 and 63,237.90 is: 94,808.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,392.68 : 137,019.54 = 63,237.90 : x
  2. Step 2: Convert to fraction form
    91,392.68/137,019.54 = 63,237.90/x
  3. Step 3: Cross multiply
    91,392.68x = 137,019.54 × 63,237.90
  4. Step 4: Simplify right side
    91,392.68x = 8,664,827,968.57
  5. Step 5: Solve for x
    x = 8,664,827,968.57/91,392.68
  6. Step 6: Final answer
    x = 94,808.77

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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.