Home / 120,278.04-165,979.56-66,565.32

Finding the Fourth Proportional to 120,278.04, 165,979.56 and 66,565.32

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Solution

The fourth proportional to 120,278.04, 165,979.56 and 66,565.32 is: 91,857.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,278.04 : 165,979.56 = 66,565.32 : x
  2. Step 2: Convert to fraction form
    120,278.04/165,979.56 = 66,565.32/x
  3. Step 3: Cross multiply
    120,278.04x = 165,979.56 × 66,565.32
  4. Step 4: Simplify right side
    120,278.04x = 11,048,482,524.86
  5. Step 5: Solve for x
    x = 11,048,482,524.86/120,278.04
  6. Step 6: Final answer
    x = 91,857.85

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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.