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Finding the Fourth Proportional to 169,209.55, 253,807.71 and 69,345.73

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Solution

The fourth proportional to 169,209.55, 253,807.71 and 69,345.73 is: 104,015.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,209.55 : 253,807.71 = 69,345.73 : x
  2. Step 2: Convert to fraction form
    169,209.55/253,807.71 = 69,345.73/x
  3. Step 3: Cross multiply
    169,209.55x = 253,807.71 × 69,345.73
  4. Step 4: Simplify right side
    169,209.55x = 17,600,480,929.58
  5. Step 5: Solve for x
    x = 17,600,480,929.58/169,209.55
  6. Step 6: Final answer
    x = 104,015.88

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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.