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Finding the Fourth Proportional to 159,657.30, 220,244.61 and 99,204.98

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Solution

The fourth proportional to 159,657.30, 220,244.61 and 99,204.98 is: 136,851.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,657.30 : 220,244.61 = 99,204.98 : x
  2. Step 2: Convert to fraction form
    159,657.30/220,244.61 = 99,204.98/x
  3. Step 3: Cross multiply
    159,657.30x = 220,244.61 × 99,204.98
  4. Step 4: Simplify right side
    159,657.30x = 21,849,361,028.93
  5. Step 5: Solve for x
    x = 21,849,361,028.93/159,657.30
  6. Step 6: Final answer
    x = 136,851.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.