Home / 100,184.43-138,253.20-57,162.79

Finding the Fourth Proportional to 100,184.43, 138,253.20 and 57,162.79

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Solution

The fourth proportional to 100,184.43, 138,253.20 and 57,162.79 is: 78,883.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,184.43 : 138,253.20 = 57,162.79 : x
  2. Step 2: Convert to fraction form
    100,184.43/138,253.20 = 57,162.79/x
  3. Step 3: Cross multiply
    100,184.43x = 138,253.20 × 57,162.79
  4. Step 4: Simplify right side
    100,184.43x = 7,902,937,947.16
  5. Step 5: Solve for x
    x = 7,902,937,947.16/100,184.43
  6. Step 6: Final answer
    x = 78,883.89

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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.