Home / 125,143.44-172,706.22-71,439.36

Finding the Fourth Proportional to 125,143.44, 172,706.22 and 71,439.36

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Solution

The fourth proportional to 125,143.44, 172,706.22 and 71,439.36 is: 98,591.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,143.44 : 172,706.22 = 71,439.36 : x
  2. Step 2: Convert to fraction form
    125,143.44/172,706.22 = 71,439.36/x
  3. Step 3: Cross multiply
    125,143.44x = 172,706.22 × 71,439.36
  4. Step 4: Simplify right side
    125,143.44x = 12,338,021,824.82
  5. Step 5: Solve for x
    x = 12,338,021,824.82/125,143.44
  6. Step 6: Final answer
    x = 98,591.04

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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.