Home / 138,927.76-191,719.10-75,265.40

Finding the Fourth Proportional to 138,927.76, 191,719.10 and 75,265.40

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Solution

The fourth proportional to 138,927.76, 191,719.10 and 75,265.40 is: 103,865.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,927.76 : 191,719.10 = 75,265.40 : x
  2. Step 2: Convert to fraction form
    138,927.76/191,719.10 = 75,265.40/x
  3. Step 3: Cross multiply
    138,927.76x = 191,719.10 × 75,265.40
  4. Step 4: Simplify right side
    138,927.76x = 14,429,815,416.60
  5. Step 5: Solve for x
    x = 14,429,815,416.60/138,927.76
  6. Step 6: Final answer
    x = 103,865.60

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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.