Home / 120,219.20-165,424.16-116,566.88

Finding the Fourth Proportional to 120,219.20, 165,424.16 and 116,566.88

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Solution

The fourth proportional to 120,219.20, 165,424.16 and 116,566.88 is: 160,398.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,219.20 : 165,424.16 = 116,566.88 : x
  2. Step 2: Convert to fraction form
    120,219.20/165,424.16 = 116,566.88/x
  3. Step 3: Cross multiply
    120,219.20x = 165,424.16 × 116,566.88
  4. Step 4: Simplify right side
    120,219.20x = 19,282,978,207.82
  5. Step 5: Solve for x
    x = 19,282,978,207.82/120,219.20
  6. Step 6: Final answer
    x = 160,398.49

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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.