Home / 173,928.20-261,065.10-85,281.80

Finding the Fourth Proportional to 173,928.20, 261,065.10 and 85,281.80

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Solution

The fourth proportional to 173,928.20, 261,065.10 and 85,281.80 is: 128,007.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,928.20 : 261,065.10 = 85,281.80 : x
  2. Step 2: Convert to fraction form
    173,928.20/261,065.10 = 85,281.80/x
  3. Step 3: Cross multiply
    173,928.20x = 261,065.10 × 85,281.80
  4. Step 4: Simplify right side
    173,928.20x = 22,264,101,645.18
  5. Step 5: Solve for x
    x = 22,264,101,645.18/173,928.20
  6. Step 6: Final answer
    x = 128,007.43

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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.