Home / 99,209.12-148,626.08-76,913.28

Finding the Fourth Proportional to 99,209.12, 148,626.08 and 76,913.28

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Solution

The fourth proportional to 99,209.12, 148,626.08 and 76,913.28 is: 115,224.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,209.12 : 148,626.08 = 76,913.28 : x
  2. Step 2: Convert to fraction form
    99,209.12/148,626.08 = 76,913.28/x
  3. Step 3: Cross multiply
    99,209.12x = 148,626.08 × 76,913.28
  4. Step 4: Simplify right side
    99,209.12x = 11,431,319,306.34
  5. Step 5: Solve for x
    x = 11,431,319,306.34/99,209.12
  6. Step 6: Final answer
    x = 115,224.48

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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.