Home / 138,451.04-191,062.52-74,788.85

Finding the Fourth Proportional to 138,451.04, 191,062.52 and 74,788.85

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Solution

The fourth proportional to 138,451.04, 191,062.52 and 74,788.85 is: 103,208.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,451.04 : 191,062.52 = 74,788.85 : x
  2. Step 2: Convert to fraction form
    138,451.04/191,062.52 = 74,788.85/x
  3. Step 3: Cross multiply
    138,451.04x = 191,062.52 × 74,788.85
  4. Step 4: Simplify right side
    138,451.04x = 14,289,344,819.65
  5. Step 5: Solve for x
    x = 14,289,344,819.65/138,451.04
  6. Step 6: Final answer
    x = 103,208.65

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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.