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Finding the Fourth Proportional to 91,805.35, 137,708.03 and 91,805.35

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Solution

The fourth proportional to 91,805.35, 137,708.03 and 91,805.35 is: 137,708.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,805.35 : 137,708.03 = 91,805.35 : x
  2. Step 2: Convert to fraction form
    91,805.35/137,708.03 = 91,805.35/x
  3. Step 3: Cross multiply
    91,805.35x = 137,708.03 × 91,805.35
  4. Step 4: Simplify right side
    91,805.35x = 12,642,333,432.93
  5. Step 5: Solve for x
    x = 12,642,333,432.93/91,805.35
  6. Step 6: Final answer
    x = 137,708.03

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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.