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Finding the Fourth Proportional to 169,599.78, 254,345.65 and 55,721.15

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Solution

The fourth proportional to 169,599.78, 254,345.65 and 55,721.15 is: 83,563.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,599.78 : 254,345.65 = 55,721.15 : x
  2. Step 2: Convert to fraction form
    169,599.78/254,345.65 = 55,721.15/x
  3. Step 3: Cross multiply
    169,599.78x = 254,345.65 × 55,721.15
  4. Step 4: Simplify right side
    169,599.78x = 14,172,430,565.16
  5. Step 5: Solve for x
    x = 14,172,430,565.16/169,599.78
  6. Step 6: Final answer
    x = 83,563.97

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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.