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Finding the Fourth Proportional to 159,010.34, 219,439.53 and 87,392.90

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Solution

The fourth proportional to 159,010.34, 219,439.53 and 87,392.90 is: 120,605.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,010.34 : 219,439.53 = 87,392.90 : x
  2. Step 2: Convert to fraction form
    159,010.34/219,439.53 = 87,392.90/x
  3. Step 3: Cross multiply
    159,010.34x = 219,439.53 × 87,392.90
  4. Step 4: Simplify right side
    159,010.34x = 19,177,456,901.34
  5. Step 5: Solve for x
    x = 19,177,456,901.34/159,010.34
  6. Step 6: Final answer
    x = 120,605.09

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1.5x scale

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.