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Finding the Fourth Proportional to 102,294.80, 153,010.20 and 91,840.40

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Solution

The fourth proportional to 102,294.80, 153,010.20 and 91,840.40 is: 137,372.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,294.80 : 153,010.20 = 91,840.40 : x
  2. Step 2: Convert to fraction form
    102,294.80/153,010.20 = 91,840.40/x
  3. Step 3: Cross multiply
    102,294.80x = 153,010.20 × 91,840.40
  4. Step 4: Simplify right side
    102,294.80x = 14,052,517,972.08
  5. Step 5: Solve for x
    x = 14,052,517,972.08/102,294.80
  6. Step 6: Final answer
    x = 137,372.75

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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.