Home / 111,158.40-153,421.28-75,359.92

Finding the Fourth Proportional to 111,158.40, 153,421.28 and 75,359.92

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Solution

The fourth proportional to 111,158.40, 153,421.28 and 75,359.92 is: 104,012.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,158.40 : 153,421.28 = 75,359.92 : x
  2. Step 2: Convert to fraction form
    111,158.40/153,421.28 = 75,359.92/x
  3. Step 3: Cross multiply
    111,158.40x = 153,421.28 × 75,359.92
  4. Step 4: Simplify right side
    111,158.40x = 11,561,815,387.10
  5. Step 5: Solve for x
    x = 11,561,815,387.10/111,158.40
  6. Step 6: Final answer
    x = 104,012.07

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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.