Home / 100,016.80-138,036.24-57,577.12

Finding the Fourth Proportional to 100,016.80, 138,036.24 and 57,577.12

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Solution

The fourth proportional to 100,016.80, 138,036.24 and 57,577.12 is: 79,463.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,016.80 : 138,036.24 = 57,577.12 : x
  2. Step 2: Convert to fraction form
    100,016.80/138,036.24 = 57,577.12/x
  3. Step 3: Cross multiply
    100,016.80x = 138,036.24 × 57,577.12
  4. Step 4: Simplify right side
    100,016.80x = 7,947,729,154.83
  5. Step 5: Solve for x
    x = 7,947,729,154.83/100,016.80
  6. Step 6: Final answer
    x = 79,463.94

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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.