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Finding the Fourth Proportional to 169,433.53, 253,985.05 and 80,663.20

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Solution

The fourth proportional to 169,433.53, 253,985.05 and 80,663.20 is: 120,916.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,433.53 : 253,985.05 = 80,663.20 : x
  2. Step 2: Convert to fraction form
    169,433.53/253,985.05 = 80,663.20/x
  3. Step 3: Cross multiply
    169,433.53x = 253,985.05 × 80,663.20
  4. Step 4: Simplify right side
    169,433.53x = 20,487,246,351.03
  5. Step 5: Solve for x
    x = 20,487,246,351.03/169,433.53
  6. Step 6: Final answer
    x = 120,916.13

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1.5x scale

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.