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Finding the Fourth Proportional to 99,079.40, 148,531.62 and 75,809.72

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Solution

The fourth proportional to 99,079.40, 148,531.62 and 75,809.72 is: 113,647.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,079.40 : 148,531.62 = 75,809.72 : x
  2. Step 2: Convert to fraction form
    99,079.40/148,531.62 = 75,809.72/x
  3. Step 3: Cross multiply
    99,079.40x = 148,531.62 × 75,809.72
  4. Step 4: Simplify right side
    99,079.40x = 11,260,141,178.96
  5. Step 5: Solve for x
    x = 11,260,141,178.96/99,079.40
  6. Step 6: Final answer
    x = 113,647.65

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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.