Home / 155,982.24-215,254.86-87,999.20

Finding the Fourth Proportional to 155,982.24, 215,254.86 and 87,999.20

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Solution

The fourth proportional to 155,982.24, 215,254.86 and 87,999.20 is: 121,438.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,982.24 : 215,254.86 = 87,999.20 : x
  2. Step 2: Convert to fraction form
    155,982.24/215,254.86 = 87,999.20/x
  3. Step 3: Cross multiply
    155,982.24x = 215,254.86 × 87,999.20
  4. Step 4: Simplify right side
    155,982.24x = 18,942,255,476.11
  5. Step 5: Solve for x
    x = 18,942,255,476.11/155,982.24
  6. Step 6: Final answer
    x = 121,438.54

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1.5x scale

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.