Home / 138,613.12-191,087.04-98,800

Finding the Fourth Proportional to 138,613.12, 191,087.04 and 98,800

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Solution

The fourth proportional to 138,613.12, 191,087.04 and 98,800 is: 136,202.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,613.12 : 191,087.04 = 98,800 : x
  2. Step 2: Convert to fraction form
    138,613.12/191,087.04 = 98,800/x
  3. Step 3: Cross multiply
    138,613.12x = 191,087.04 × 98,800
  4. Step 4: Simplify right side
    138,613.12x = 18,879,399,552
  5. Step 5: Solve for x
    x = 18,879,399,552/138,613.12
  6. Step 6: Final answer
    x = 136,202.11

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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.