Home / 151,689.30-209,339.28-91,278.96

Finding the Fourth Proportional to 151,689.30, 209,339.28 and 91,278.96

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Solution

The fourth proportional to 151,689.30, 209,339.28 and 91,278.96 is: 125,969.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,689.30 : 209,339.28 = 91,278.96 : x
  2. Step 2: Convert to fraction form
    151,689.30/209,339.28 = 91,278.96/x
  3. Step 3: Cross multiply
    151,689.30x = 209,339.28 × 91,278.96
  4. Step 4: Simplify right side
    151,689.30x = 19,108,271,765.55
  5. Step 5: Solve for x
    x = 19,108,271,765.55/151,689.30
  6. Step 6: Final answer
    x = 125,969.81

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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.