Home / 138,898.52-191,680.02-75,236.36

Finding the Fourth Proportional to 138,898.52, 191,680.02 and 75,236.36

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Solution

The fourth proportional to 138,898.52, 191,680.02 and 75,236.36 is: 103,826.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,898.52 : 191,680.02 = 75,236.36 : x
  2. Step 2: Convert to fraction form
    138,898.52/191,680.02 = 75,236.36/x
  3. Step 3: Cross multiply
    138,898.52x = 191,680.02 × 75,236.36
  4. Step 4: Simplify right side
    138,898.52x = 14,421,306,989.53
  5. Step 5: Solve for x
    x = 14,421,306,989.53/138,898.52
  6. Step 6: Final answer
    x = 103,826.21

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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.