Home / 125,120.47-172,664.30-71,404.10

Finding the Fourth Proportional to 125,120.47, 172,664.30 and 71,404.10

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Solution

The fourth proportional to 125,120.47, 172,664.30 and 71,404.10 is: 98,536.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,120.47 : 172,664.30 = 71,404.10 : x
  2. Step 2: Convert to fraction form
    125,120.47/172,664.30 = 71,404.10/x
  3. Step 3: Cross multiply
    125,120.47x = 172,664.30 × 71,404.10
  4. Step 4: Simplify right side
    125,120.47x = 12,328,938,586.61
  5. Step 5: Solve for x
    x = 12,328,938,586.61/125,120.47
  6. Step 6: Final answer
    x = 98,536.55

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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.