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Finding the Fourth Proportional to 169,615.43, 254,424.01 and 99,445.53

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Solution

The fourth proportional to 169,615.43, 254,424.01 and 99,445.53 is: 149,168.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,615.43 : 254,424.01 = 99,445.53 : x
  2. Step 2: Convert to fraction form
    169,615.43/254,424.01 = 99,445.53/x
  3. Step 3: Cross multiply
    169,615.43x = 254,424.01 × 99,445.53
  4. Step 4: Simplify right side
    169,615.43x = 25,301,330,519.18
  5. Step 5: Solve for x
    x = 25,301,330,519.18/169,615.43
  6. Step 6: Final answer
    x = 149,168.81

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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.