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Finding the Fourth Proportional to 125,367.84, 172,990.56 and 71,649.12

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Solution

The fourth proportional to 125,367.84, 172,990.56 and 71,649.12 is: 98,866.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,367.84 : 172,990.56 = 71,649.12 : x
  2. Step 2: Convert to fraction form
    125,367.84/172,990.56 = 71,649.12/x
  3. Step 3: Cross multiply
    125,367.84x = 172,990.56 × 71,649.12
  4. Step 4: Simplify right side
    125,367.84x = 12,394,621,392.31
  5. Step 5: Solve for x
    x = 12,394,621,392.31/125,367.84
  6. Step 6: Final answer
    x = 98,866.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.