Home / 138,815.52-191,566.38-75,153.48

Finding the Fourth Proportional to 138,815.52, 191,566.38 and 75,153.48

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Solution

The fourth proportional to 138,815.52, 191,566.38 and 75,153.48 is: 103,712.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,815.52 : 191,566.38 = 75,153.48 : x
  2. Step 2: Convert to fraction form
    138,815.52/191,566.38 = 75,153.48/x
  3. Step 3: Cross multiply
    138,815.52x = 191,566.38 × 75,153.48
  4. Step 4: Simplify right side
    138,815.52x = 14,396,880,108.00
  5. Step 5: Solve for x
    x = 14,396,880,108.00/138,815.52
  6. Step 6: Final answer
    x = 103,712.32

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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.