Home / 159,140.76-219,612.66-87,521.64

Finding the Fourth Proportional to 159,140.76, 219,612.66 and 87,521.64

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Solution

The fourth proportional to 159,140.76, 219,612.66 and 87,521.64 is: 120,778.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,140.76 : 219,612.66 = 87,521.64 : x
  2. Step 2: Convert to fraction form
    159,140.76/219,612.66 = 87,521.64/x
  3. Step 3: Cross multiply
    159,140.76x = 219,612.66 × 87,521.64
  4. Step 4: Simplify right side
    159,140.76x = 19,220,860,167.96
  5. Step 5: Solve for x
    x = 19,220,860,167.96/159,140.76
  6. Step 6: Final answer
    x = 120,778.99

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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.