Home / 153,891.12-212,380.38-85,921.44

Finding the Fourth Proportional to 153,891.12, 212,380.38 and 85,921.44

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Solution

The fourth proportional to 153,891.12, 212,380.38 and 85,921.44 is: 118,577.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,891.12 : 212,380.38 = 85,921.44 : x
  2. Step 2: Convert to fraction form
    153,891.12/212,380.38 = 85,921.44/x
  3. Step 3: Cross multiply
    153,891.12x = 212,380.38 × 85,921.44
  4. Step 4: Simplify right side
    153,891.12x = 18,248,028,077.35
  5. Step 5: Solve for x
    x = 18,248,028,077.35/153,891.12
  6. Step 6: Final answer
    x = 118,577.52

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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.