Home / 99,580.42-149,124.65-74,219.10

Finding the Fourth Proportional to 99,580.42, 149,124.65 and 74,219.10

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Solution

The fourth proportional to 99,580.42, 149,124.65 and 74,219.10 is: 111,145.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,580.42 : 149,124.65 = 74,219.10 : x
  2. Step 2: Convert to fraction form
    99,580.42/149,124.65 = 74,219.10/x
  3. Step 3: Cross multiply
    99,580.42x = 149,124.65 × 74,219.10
  4. Step 4: Simplify right side
    99,580.42x = 11,067,897,310.82
  5. Step 5: Solve for x
    x = 11,067,897,310.82/99,580.42
  6. Step 6: Final answer
    x = 111,145.32

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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.