Home / 223,825.12-309,010.08-138,988.96

Finding the Fourth Proportional to 223,825.12, 309,010.08 and 138,988.96

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Solution

The fourth proportional to 223,825.12, 309,010.08 and 138,988.96 is: 191,886.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,825.12 : 309,010.08 = 138,988.96 : x
  2. Step 2: Convert to fraction form
    223,825.12/309,010.08 = 138,988.96/x
  3. Step 3: Cross multiply
    223,825.12x = 309,010.08 × 138,988.96
  4. Step 4: Simplify right side
    223,825.12x = 42,948,989,648.72
  5. Step 5: Solve for x
    x = 42,948,989,648.72/223,825.12
  6. Step 6: Final answer
    x = 191,886.37

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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.