Home / 124,856.28-172,289.76-71,139.96

Finding the Fourth Proportional to 124,856.28, 172,289.76 and 71,139.96

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Solution

The fourth proportional to 124,856.28, 172,289.76 and 71,139.96 is: 98,166.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,856.28 : 172,289.76 = 71,139.96 : x
  2. Step 2: Convert to fraction form
    124,856.28/172,289.76 = 71,139.96/x
  3. Step 3: Cross multiply
    124,856.28x = 172,289.76 × 71,139.96
  4. Step 4: Simplify right side
    124,856.28x = 12,256,686,634.81
  5. Step 5: Solve for x
    x = 12,256,686,634.81/124,856.28
  6. Step 6: Final answer
    x = 98,166.36

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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.