Home / 125,063.62-172,569.20-75,979.76

Finding the Fourth Proportional to 125,063.62, 172,569.20 and 75,979.76

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Solution

The fourth proportional to 125,063.62, 172,569.20 and 75,979.76 is: 104,840.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,063.62 : 172,569.20 = 75,979.76 : x
  2. Step 2: Convert to fraction form
    125,063.62/172,569.20 = 75,979.76/x
  3. Step 3: Cross multiply
    125,063.62x = 172,569.20 × 75,979.76
  4. Step 4: Simplify right side
    125,063.62x = 13,111,766,399.39
  5. Step 5: Solve for x
    x = 13,111,766,399.39/125,063.62
  6. Step 6: Final answer
    x = 104,840.77

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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.