Home / 124,505.62-172,005.12-81,587.09

Finding the Fourth Proportional to 124,505.62, 172,005.12 and 81,587.09

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Solution

The fourth proportional to 124,505.62, 172,005.12 and 81,587.09 is: 112,712.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,505.62 : 172,005.12 = 81,587.09 : x
  2. Step 2: Convert to fraction form
    124,505.62/172,005.12 = 81,587.09/x
  3. Step 3: Cross multiply
    124,505.62x = 172,005.12 × 81,587.09
  4. Step 4: Simplify right side
    124,505.62x = 14,033,397,635.91
  5. Step 5: Solve for x
    x = 14,033,397,635.91/124,505.62
  6. Step 6: Final answer
    x = 112,712.97

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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.