Home / 99,531.60-149,095.80-61,976.40

Finding the Fourth Proportional to 99,531.60, 149,095.80 and 61,976.40

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Solution

The fourth proportional to 99,531.60, 149,095.80 and 61,976.40 is: 92,839.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,531.60 : 149,095.80 = 61,976.40 : x
  2. Step 2: Convert to fraction form
    99,531.60/149,095.80 = 61,976.40/x
  3. Step 3: Cross multiply
    99,531.60x = 149,095.80 × 61,976.40
  4. Step 4: Simplify right side
    99,531.60x = 9,240,420,939.12
  5. Step 5: Solve for x
    x = 9,240,420,939.12/99,531.60
  6. Step 6: Final answer
    x = 92,839.07

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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.