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Finding the Fourth Proportional to 143,642.81, 215,456.11 and 63,657.74

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Solution

The fourth proportional to 143,642.81, 215,456.11 and 63,657.74 is: 95,483.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,642.81 : 215,456.11 = 63,657.74 : x
  2. Step 2: Convert to fraction form
    143,642.81/215,456.11 = 63,657.74/x
  3. Step 3: Cross multiply
    143,642.81x = 215,456.11 × 63,657.74
  4. Step 4: Simplify right side
    143,642.81x = 13,715,449,031.79
  5. Step 5: Solve for x
    x = 13,715,449,031.79/143,642.81
  6. Step 6: Final answer
    x = 95,483.02

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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.