Home / 125,074.62-172,620.23-76,705.47

Finding the Fourth Proportional to 125,074.62, 172,620.23 and 76,705.47

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Solution

The fourth proportional to 125,074.62, 172,620.23 and 76,705.47 is: 105,864.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,074.62 : 172,620.23 = 76,705.47 : x
  2. Step 2: Convert to fraction form
    125,074.62/172,620.23 = 76,705.47/x
  3. Step 3: Cross multiply
    125,074.62x = 172,620.23 × 76,705.47
  4. Step 4: Simplify right side
    125,074.62x = 13,240,915,490.13
  5. Step 5: Solve for x
    x = 13,240,915,490.13/125,074.62
  6. Step 6: Final answer
    x = 105,864.13

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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.