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Finding the Fourth Proportional to 99,579.60, 137,375.40 and 67,303.92

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Solution

The fourth proportional to 99,579.60, 137,375.40 and 67,303.92 is: 92,849.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,579.60 : 137,375.40 = 67,303.92 : x
  2. Step 2: Convert to fraction form
    99,579.60/137,375.40 = 67,303.92/x
  3. Step 3: Cross multiply
    99,579.60x = 137,375.40 × 67,303.92
  4. Step 4: Simplify right side
    99,579.60x = 9,245,902,931.57
  5. Step 5: Solve for x
    x = 9,245,902,931.57/99,579.60
  6. Step 6: Final answer
    x = 92,849.37

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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.