Home / 215,639.20-297,546.64-120,124.32

Finding the Fourth Proportional to 215,639.20, 297,546.64 and 120,124.32

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Solution

The fourth proportional to 215,639.20, 297,546.64 and 120,124.32 is: 165,751.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,639.20 : 297,546.64 = 120,124.32 : x
  2. Step 2: Convert to fraction form
    215,639.20/297,546.64 = 120,124.32/x
  3. Step 3: Cross multiply
    215,639.20x = 297,546.64 × 120,124.32
  4. Step 4: Simplify right side
    215,639.20x = 35,742,587,798.28
  5. Step 5: Solve for x
    x = 35,742,587,798.28/215,639.20
  6. Step 6: Final answer
    x = 165,751.81

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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.