Home / 155,415.28-214,452.92-87,429.96

Finding the Fourth Proportional to 155,415.28, 214,452.92 and 87,429.96

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Solution

The fourth proportional to 155,415.28, 214,452.92 and 87,429.96 is: 120,642.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,415.28 : 214,452.92 = 87,429.96 : x
  2. Step 2: Convert to fraction form
    155,415.28/214,452.92 = 87,429.96/x
  3. Step 3: Cross multiply
    155,415.28x = 214,452.92 × 87,429.96
  4. Step 4: Simplify right side
    155,415.28x = 18,749,610,217.48
  5. Step 5: Solve for x
    x = 18,749,610,217.48/155,415.28
  6. Step 6: Final answer
    x = 120,642.00

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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.