Home / 212,643.12-318,686.28-107,405.04

Finding the Fourth Proportional to 212,643.12, 318,686.28 and 107,405.04

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Solution

The fourth proportional to 212,643.12, 318,686.28 and 107,405.04 is: 160,966.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,643.12 : 318,686.28 = 107,405.04 : x
  2. Step 2: Convert to fraction form
    212,643.12/318,686.28 = 107,405.04/x
  3. Step 3: Cross multiply
    212,643.12x = 318,686.28 × 107,405.04
  4. Step 4: Simplify right side
    212,643.12x = 34,228,512,650.85
  5. Step 5: Solve for x
    x = 34,228,512,650.85/212,643.12
  6. Step 6: Final answer
    x = 160,966.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.