Home / 159,531.15-220,152.53-87,911.15

Finding the Fourth Proportional to 159,531.15, 220,152.53 and 87,911.15

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Solution

The fourth proportional to 159,531.15, 220,152.53 and 87,911.15 is: 121,317.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,531.15 : 220,152.53 = 87,911.15 : x
  2. Step 2: Convert to fraction form
    159,531.15/220,152.53 = 87,911.15/x
  3. Step 3: Cross multiply
    159,531.15x = 220,152.53 × 87,911.15
  4. Step 4: Simplify right side
    159,531.15x = 19,353,862,857.87
  5. Step 5: Solve for x
    x = 19,353,862,857.87/159,531.15
  6. Step 6: Final answer
    x = 121,317.14

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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.