Home / 137,289.01-189,436.89-76,862.20

Finding the Fourth Proportional to 137,289.01, 189,436.89 and 76,862.20

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Solution

The fourth proportional to 137,289.01, 189,436.89 and 76,862.20 is: 106,057.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,289.01 : 189,436.89 = 76,862.20 : x
  2. Step 2: Convert to fraction form
    137,289.01/189,436.89 = 76,862.20/x
  3. Step 3: Cross multiply
    137,289.01x = 189,436.89 × 76,862.20
  4. Step 4: Simplify right side
    137,289.01x = 14,560,536,126.56
  5. Step 5: Solve for x
    x = 14,560,536,126.56/137,289.01
  6. Step 6: Final answer
    x = 106,057.55

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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.