Home / 153,891.08-212,380.40-85,921.44

Finding the Fourth Proportional to 153,891.08, 212,380.40 and 85,921.44

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Solution

The fourth proportional to 153,891.08, 212,380.40 and 85,921.44 is: 118,577.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,891.08 : 212,380.40 = 85,921.44 : x
  2. Step 2: Convert to fraction form
    153,891.08/212,380.40 = 85,921.44/x
  3. Step 3: Cross multiply
    153,891.08x = 212,380.40 × 85,921.44
  4. Step 4: Simplify right side
    153,891.08x = 18,248,029,795.78
  5. Step 5: Solve for x
    x = 18,248,029,795.78/153,891.08
  6. Step 6: Final answer
    x = 118,577.57

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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.