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Finding the Fourth Proportional to 159,146.67, 219,616.30 and 87,522.42

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Solution

The fourth proportional to 159,146.67, 219,616.30 and 87,522.42 is: 120,777.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,146.67 : 219,616.30 = 87,522.42 : x
  2. Step 2: Convert to fraction form
    159,146.67/219,616.30 = 87,522.42/x
  3. Step 3: Cross multiply
    159,146.67x = 219,616.30 × 87,522.42
  4. Step 4: Simplify right side
    159,146.67x = 19,221,349,609.83
  5. Step 5: Solve for x
    x = 19,221,349,609.83/159,146.67
  6. Step 6: Final answer
    x = 120,777.58

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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.