Home / 152,142.96-209,906.29-87,610.81

Finding the Fourth Proportional to 152,142.96, 209,906.29 and 87,610.81

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Solution

The fourth proportional to 152,142.96, 209,906.29 and 87,610.81 is: 120,873.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,142.96 : 209,906.29 = 87,610.81 : x
  2. Step 2: Convert to fraction form
    152,142.96/209,906.29 = 87,610.81/x
  3. Step 3: Cross multiply
    152,142.96x = 209,906.29 × 87,610.81
  4. Step 4: Simplify right side
    152,142.96x = 18,390,059,785.26
  5. Step 5: Solve for x
    x = 18,390,059,785.26/152,142.96
  6. Step 6: Final answer
    x = 120,873.55

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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.