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Finding the Fourth Proportional to 99,894.40, 137,793.60 and 59,581.20

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Solution

The fourth proportional to 99,894.40, 137,793.60 and 59,581.20 is: 82,185.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,894.40 : 137,793.60 = 59,581.20 : x
  2. Step 2: Convert to fraction form
    99,894.40/137,793.60 = 59,581.20/x
  3. Step 3: Cross multiply
    99,894.40x = 137,793.60 × 59,581.20
  4. Step 4: Simplify right side
    99,894.40x = 8,209,908,040.32
  5. Step 5: Solve for x
    x = 8,209,908,040.32/99,894.40
  6. Step 6: Final answer
    x = 82,185.87

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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.