Home / 151,956.73-209,744.10-100,311.63

Finding the Fourth Proportional to 151,956.73, 209,744.10 and 100,311.63

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Solution

The fourth proportional to 151,956.73, 209,744.10 and 100,311.63 is: 138,458.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,956.73 : 209,744.10 = 100,311.63 : x
  2. Step 2: Convert to fraction form
    151,956.73/209,744.10 = 100,311.63/x
  3. Step 3: Cross multiply
    151,956.73x = 209,744.10 × 100,311.63
  4. Step 4: Simplify right side
    151,956.73x = 21,039,773,601.18
  5. Step 5: Solve for x
    x = 21,039,773,601.18/151,956.73
  6. Step 6: Final answer
    x = 138,458.98

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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.