Home / 159,050.40-219,489.78-87,430.86

Finding the Fourth Proportional to 159,050.40, 219,489.78 and 87,430.86

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Solution

The fourth proportional to 159,050.40, 219,489.78 and 87,430.86 is: 120,654.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,050.40 : 219,489.78 = 87,430.86 : x
  2. Step 2: Convert to fraction form
    159,050.40/219,489.78 = 87,430.86/x
  3. Step 3: Cross multiply
    159,050.40x = 219,489.78 × 87,430.86
  4. Step 4: Simplify right side
    159,050.40x = 19,190,180,226.61
  5. Step 5: Solve for x
    x = 19,190,180,226.61/159,050.40
  6. Step 6: Final answer
    x = 120,654.71

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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.