Home / 203,409.12-280,719.36-122,856.24

Finding the Fourth Proportional to 203,409.12, 280,719.36 and 122,856.24

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Solution

The fourth proportional to 203,409.12, 280,719.36 and 122,856.24 is: 169,550.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,409.12 : 280,719.36 = 122,856.24 : x
  2. Step 2: Convert to fraction form
    203,409.12/280,719.36 = 122,856.24/x
  3. Step 3: Cross multiply
    203,409.12x = 280,719.36 × 122,856.24
  4. Step 4: Simplify right side
    203,409.12x = 34,488,125,064.81
  5. Step 5: Solve for x
    x = 34,488,125,064.81/203,409.12
  6. Step 6: Final answer
    x = 169,550.53

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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.