Home / 112,987.62-169,537.05-79,920.18

Finding the Fourth Proportional to 112,987.62, 169,537.05 and 79,920.18

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Solution

The fourth proportional to 112,987.62, 169,537.05 and 79,920.18 is: 119,919.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,987.62 : 169,537.05 = 79,920.18 : x
  2. Step 2: Convert to fraction form
    112,987.62/169,537.05 = 79,920.18/x
  3. Step 3: Cross multiply
    112,987.62x = 169,537.05 × 79,920.18
  4. Step 4: Simplify right side
    112,987.62x = 13,549,431,552.67
  5. Step 5: Solve for x
    x = 13,549,431,552.67/112,987.62
  6. Step 6: Final answer
    x = 119,919.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.