Home / 159,432.48-220,018.40-87,814.72

Finding the Fourth Proportional to 159,432.48, 220,018.40 and 87,814.72

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Solution

The fourth proportional to 159,432.48, 220,018.40 and 87,814.72 is: 121,185.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,432.48 : 220,018.40 = 87,814.72 : x
  2. Step 2: Convert to fraction form
    159,432.48/220,018.40 = 87,814.72/x
  3. Step 3: Cross multiply
    159,432.48x = 220,018.40 × 87,814.72
  4. Step 4: Simplify right side
    159,432.48x = 19,320,854,190.85
  5. Step 5: Solve for x
    x = 19,320,854,190.85/159,432.48
  6. Step 6: Final answer
    x = 121,185.18

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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.