Home / 201,750.10-278,439.60-121,219.90

Finding the Fourth Proportional to 201,750.10, 278,439.60 and 121,219.90

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Solution

The fourth proportional to 201,750.10, 278,439.60 and 121,219.90 is: 167,298.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,750.10 : 278,439.60 = 121,219.90 : x
  2. Step 2: Convert to fraction form
    201,750.10/278,439.60 = 121,219.90/x
  3. Step 3: Cross multiply
    201,750.10x = 278,439.60 × 121,219.90
  4. Step 4: Simplify right side
    201,750.10x = 33,752,420,468.04
  5. Step 5: Solve for x
    x = 33,752,420,468.04/201,750.10
  6. Step 6: Final answer
    x = 167,298.16

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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.