Home / 115,827.20-173,740.80-71,309.60

Finding the Fourth Proportional to 115,827.20, 173,740.80 and 71,309.60

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Solution

The fourth proportional to 115,827.20, 173,740.80 and 71,309.60 is: 106,964.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,827.20 : 173,740.80 = 71,309.60 : x
  2. Step 2: Convert to fraction form
    115,827.20/173,740.80 = 71,309.60/x
  3. Step 3: Cross multiply
    115,827.20x = 173,740.80 × 71,309.60
  4. Step 4: Simplify right side
    115,827.20x = 12,389,386,951.68
  5. Step 5: Solve for x
    x = 12,389,386,951.68/115,827.20
  6. Step 6: Final answer
    x = 106,964.40

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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.