Home / 125,238.16-172,840.62-71,531.20

Finding the Fourth Proportional to 125,238.16, 172,840.62 and 71,531.20

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Solution

The fourth proportional to 125,238.16, 172,840.62 and 71,531.20 is: 98,719.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,238.16 : 172,840.62 = 71,531.20 : x
  2. Step 2: Convert to fraction form
    125,238.16/172,840.62 = 71,531.20/x
  3. Step 3: Cross multiply
    125,238.16x = 172,840.62 × 71,531.20
  4. Step 4: Simplify right side
    125,238.16x = 12,363,496,957.34
  5. Step 5: Solve for x
    x = 12,363,496,957.34/125,238.16
  6. Step 6: Final answer
    x = 98,719.89

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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.