Home / 112,988.62-169,538.55-79,921.18

Finding the Fourth Proportional to 112,988.62, 169,538.55 and 79,921.18

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Solution

The fourth proportional to 112,988.62, 169,538.55 and 79,921.18 is: 119,921.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,988.62 : 169,538.55 = 79,921.18 : x
  2. Step 2: Convert to fraction form
    112,988.62/169,538.55 = 79,921.18/x
  3. Step 3: Cross multiply
    112,988.62x = 169,538.55 × 79,921.18
  4. Step 4: Simplify right side
    112,988.62x = 13,549,720,971.49
  5. Step 5: Solve for x
    x = 13,549,720,971.49/112,988.62
  6. Step 6: Final answer
    x = 119,921.11

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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.