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Finding the Fourth Proportional to 157,974.48, 218,010.08 and 86,352.96

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Solution

The fourth proportional to 157,974.48, 218,010.08 and 86,352.96 is: 119,169.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,974.48 : 218,010.08 = 86,352.96 : x
  2. Step 2: Convert to fraction form
    157,974.48/218,010.08 = 86,352.96/x
  3. Step 3: Cross multiply
    157,974.48x = 218,010.08 × 86,352.96
  4. Step 4: Simplify right side
    157,974.48x = 18,825,815,717.84
  5. Step 5: Solve for x
    x = 18,825,815,717.84/157,974.48
  6. Step 6: Final answer
    x = 119,169.98

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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.