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Finding the Fourth Proportional to 143,802.31, 215,702.55 and 43,962.12

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Solution

The fourth proportional to 143,802.31, 215,702.55 and 43,962.12 is: 65,942.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,802.31 : 215,702.55 = 43,962.12 : x
  2. Step 2: Convert to fraction form
    143,802.31/215,702.55 = 43,962.12/x
  3. Step 3: Cross multiply
    143,802.31x = 215,702.55 × 43,962.12
  4. Step 4: Simplify right side
    143,802.31x = 9,482,741,387.41
  5. Step 5: Solve for x
    x = 9,482,741,387.41/143,802.31
  6. Step 6: Final answer
    x = 65,942.90

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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.