Home / 126,386.80-189,689.28-51,548.20

Finding the Fourth Proportional to 126,386.80, 189,689.28 and 51,548.20

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Solution

The fourth proportional to 126,386.80, 189,689.28 and 51,548.20 is: 77,366.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,386.80 : 189,689.28 = 51,548.20 : x
  2. Step 2: Convert to fraction form
    126,386.80/189,689.28 = 51,548.20/x
  3. Step 3: Cross multiply
    126,386.80x = 189,689.28 × 51,548.20
  4. Step 4: Simplify right side
    126,386.80x = 9,778,140,943.30
  5. Step 5: Solve for x
    x = 9,778,140,943.30/126,386.80
  6. Step 6: Final answer
    x = 77,366.79

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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.