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Finding the Fourth Proportional to 143,585.61, 215,410.53 and 43,753.61

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Solution

The fourth proportional to 143,585.61, 215,410.53 and 43,753.61 is: 65,640.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,585.61 : 215,410.53 = 43,753.61 : x
  2. Step 2: Convert to fraction form
    143,585.61/215,410.53 = 43,753.61/x
  3. Step 3: Cross multiply
    143,585.61x = 215,410.53 × 43,753.61
  4. Step 4: Simplify right side
    143,585.61x = 9,424,988,319.51
  5. Step 5: Solve for x
    x = 9,424,988,319.51/143,585.61
  6. Step 6: Final answer
    x = 65,640.20

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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.