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Finding the Fourth Proportional to 125,998.80, 189,014.40 and 62,851.20

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Solution

The fourth proportional to 125,998.80, 189,014.40 and 62,851.20 is: 94,284.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,998.80 : 189,014.40 = 62,851.20 : x
  2. Step 2: Convert to fraction form
    125,998.80/189,014.40 = 62,851.20/x
  3. Step 3: Cross multiply
    125,998.80x = 189,014.40 × 62,851.20
  4. Step 4: Simplify right side
    125,998.80x = 11,879,781,857.28
  5. Step 5: Solve for x
    x = 11,879,781,857.28/125,998.80
  6. Step 6: Final answer
    x = 94,284.88

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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.