Home / 143,353.12-197,825.52-79,689.28

Finding the Fourth Proportional to 143,353.12, 197,825.52 and 79,689.28

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Solution

The fourth proportional to 143,353.12, 197,825.52 and 79,689.28 is: 109,970.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,353.12 : 197,825.52 = 79,689.28 : x
  2. Step 2: Convert to fraction form
    143,353.12/197,825.52 = 79,689.28/x
  3. Step 3: Cross multiply
    143,353.12x = 197,825.52 × 79,689.28
  4. Step 4: Simplify right side
    143,353.12x = 15,764,573,254.43
  5. Step 5: Solve for x
    x = 15,764,573,254.43/143,353.12
  6. Step 6: Final answer
    x = 109,970.21

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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.