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Finding the Fourth Proportional to 159,168.42, 219,655.92 and 87,552.06

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Solution

The fourth proportional to 159,168.42, 219,655.92 and 87,552.06 is: 120,823.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,168.42 : 219,655.92 = 87,552.06 : x
  2. Step 2: Convert to fraction form
    159,168.42/219,655.92 = 87,552.06/x
  3. Step 3: Cross multiply
    159,168.42x = 219,655.92 × 87,552.06
  4. Step 4: Simplify right side
    159,168.42x = 19,231,328,287.20
  5. Step 5: Solve for x
    x = 19,231,328,287.20/159,168.42
  6. Step 6: Final answer
    x = 120,823.77

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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.