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Finding the Fourth Proportional to 143,641.81, 215,454.61 and 63,656.74

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Solution

The fourth proportional to 143,641.81, 215,454.61 and 63,656.74 is: 95,481.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,641.81 : 215,454.61 = 63,656.74 : x
  2. Step 2: Convert to fraction form
    143,641.81/215,454.61 = 63,656.74/x
  3. Step 3: Cross multiply
    143,641.81x = 215,454.61 × 63,656.74
  4. Step 4: Simplify right side
    143,641.81x = 13,715,138,090.57
  5. Step 5: Solve for x
    x = 13,715,138,090.57/143,641.81
  6. Step 6: Final answer
    x = 95,481.52

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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.