Home / 155,981.44-215,236.16-87,999.48

Finding the Fourth Proportional to 155,981.44, 215,236.16 and 87,999.48

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Solution

The fourth proportional to 155,981.44, 215,236.16 and 87,999.48 is: 121,429.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,981.44 : 215,236.16 = 87,999.48 : x
  2. Step 2: Convert to fraction form
    155,981.44/215,236.16 = 87,999.48/x
  3. Step 3: Cross multiply
    155,981.44x = 215,236.16 × 87,999.48
  4. Step 4: Simplify right side
    155,981.44x = 18,940,670,157.20
  5. Step 5: Solve for x
    x = 18,940,670,157.20/155,981.44
  6. Step 6: Final answer
    x = 121,429.00

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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.