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Finding the Fourth Proportional to 173,680.40, 260,403.80 and 68,445.20

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Solution

The fourth proportional to 173,680.40, 260,403.80 and 68,445.20 is: 102,621.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,680.40 : 260,403.80 = 68,445.20 : x
  2. Step 2: Convert to fraction form
    173,680.40/260,403.80 = 68,445.20/x
  3. Step 3: Cross multiply
    173,680.40x = 260,403.80 × 68,445.20
  4. Step 4: Simplify right side
    173,680.40x = 17,823,390,171.76
  5. Step 5: Solve for x
    x = 17,823,390,171.76/173,680.40
  6. Step 6: Final answer
    x = 102,621.77

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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.