Home / 111,877.12-154,387.20-61,575.04

Finding the Fourth Proportional to 111,877.12, 154,387.20 and 61,575.04

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Solution

The fourth proportional to 111,877.12, 154,387.20 and 61,575.04 is: 84,971.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,877.12 : 154,387.20 = 61,575.04 : x
  2. Step 2: Convert to fraction form
    111,877.12/154,387.20 = 61,575.04/x
  3. Step 3: Cross multiply
    111,877.12x = 154,387.20 × 61,575.04
  4. Step 4: Simplify right side
    111,877.12x = 9,506,398,015.49
  5. Step 5: Solve for x
    x = 9,506,398,015.49/111,877.12
  6. Step 6: Final answer
    x = 84,971.78

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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.