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Finding the Fourth Proportional to 141,605.60, 212,062.80 and 67,647.20

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Solution

The fourth proportional to 141,605.60, 212,062.80 and 67,647.20 is: 101,305.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,605.60 : 212,062.80 = 67,647.20 : x
  2. Step 2: Convert to fraction form
    141,605.60/212,062.80 = 67,647.20/x
  3. Step 3: Cross multiply
    141,605.60x = 212,062.80 × 67,647.20
  4. Step 4: Simplify right side
    141,605.60x = 14,345,454,644.16
  5. Step 5: Solve for x
    x = 14,345,454,644.16/141,605.60
  6. Step 6: Final answer
    x = 101,305.70

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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.