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Finding the Fourth Proportional to 173,440.80, 260,209.80 and 84,697.20

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Solution

The fourth proportional to 173,440.80, 260,209.80 and 84,697.20 is: 127,069.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,440.80 : 260,209.80 = 84,697.20 : x
  2. Step 2: Convert to fraction form
    173,440.80/260,209.80 = 84,697.20/x
  3. Step 3: Cross multiply
    173,440.80x = 260,209.80 × 84,697.20
  4. Step 4: Simplify right side
    173,440.80x = 22,039,041,472.56
  5. Step 5: Solve for x
    x = 22,039,041,472.56/173,440.80
  6. Step 6: Final answer
    x = 127,069.53

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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.