Home / 100,278.14-138,378.92-60,013.98

Finding the Fourth Proportional to 100,278.14, 138,378.92 and 60,013.98

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Solution

The fourth proportional to 100,278.14, 138,378.92 and 60,013.98 is: 82,816.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,278.14 : 138,378.92 = 60,013.98 : x
  2. Step 2: Convert to fraction form
    100,278.14/138,378.92 = 60,013.98/x
  3. Step 3: Cross multiply
    100,278.14x = 138,378.92 × 60,013.98
  4. Step 4: Simplify right side
    100,278.14x = 8,304,669,437.23
  5. Step 5: Solve for x
    x = 8,304,669,437.23/100,278.14
  6. Step 6: Final answer
    x = 82,816.35

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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.