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Finding the Fourth Proportional to 169,870.56, 254,772.36 and 161,440.80

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Solution

The fourth proportional to 169,870.56, 254,772.36 and 161,440.80 is: 242,129.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,870.56 : 254,772.36 = 161,440.80 : x
  2. Step 2: Convert to fraction form
    169,870.56/254,772.36 = 161,440.80/x
  3. Step 3: Cross multiply
    169,870.56x = 254,772.36 × 161,440.80
  4. Step 4: Simplify right side
    169,870.56x = 41,130,653,616.29
  5. Step 5: Solve for x
    x = 41,130,653,616.29/169,870.56
  6. Step 6: Final answer
    x = 242,129.38

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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.