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Finding the Fourth Proportional to 92,251.20, 138,085.20 and 66,007.20

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Solution

The fourth proportional to 92,251.20, 138,085.20 and 66,007.20 is: 98,802.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,251.20 : 138,085.20 = 66,007.20 : x
  2. Step 2: Convert to fraction form
    92,251.20/138,085.20 = 66,007.20/x
  3. Step 3: Cross multiply
    92,251.20x = 138,085.20 × 66,007.20
  4. Step 4: Simplify right side
    92,251.20x = 9,114,617,413.44
  5. Step 5: Solve for x
    x = 9,114,617,413.44/92,251.20
  6. Step 6: Final answer
    x = 98,802.16

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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.