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Finding the Fourth Proportional to 143,862.48, 215,906.58 and 99,799.02

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Solution

The fourth proportional to 143,862.48, 215,906.58 and 99,799.02 is: 149,776.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,862.48 : 215,906.58 = 99,799.02 : x
  2. Step 2: Convert to fraction form
    143,862.48/215,906.58 = 99,799.02/x
  3. Step 3: Cross multiply
    143,862.48x = 215,906.58 × 99,799.02
  4. Step 4: Simplify right side
    143,862.48x = 21,547,265,095.55
  5. Step 5: Solve for x
    x = 21,547,265,095.55/143,862.48
  6. Step 6: Final answer
    x = 149,776.82

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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.