Home / 138,601.20-207,547.56-76,203.12

Finding the Fourth Proportional to 138,601.20, 207,547.56 and 76,203.12

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Solution

The fourth proportional to 138,601.20, 207,547.56 and 76,203.12 is: 114,109.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,601.20 : 207,547.56 = 76,203.12 : x
  2. Step 2: Convert to fraction form
    138,601.20/207,547.56 = 76,203.12/x
  3. Step 3: Cross multiply
    138,601.20x = 207,547.56 × 76,203.12
  4. Step 4: Simplify right side
    138,601.20x = 15,815,771,620.39
  5. Step 5: Solve for x
    x = 15,815,771,620.39/138,601.20
  6. Step 6: Final answer
    x = 114,109.92

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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.