Home / 103,788.40-155,113.95-75,767.47

Finding the Fourth Proportional to 103,788.40, 155,113.95 and 75,767.47

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Solution

The fourth proportional to 103,788.40, 155,113.95 and 75,767.47 is: 113,236.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,788.40 : 155,113.95 = 75,767.47 : x
  2. Step 2: Convert to fraction form
    103,788.40/155,113.95 = 75,767.47/x
  3. Step 3: Cross multiply
    103,788.40x = 155,113.95 × 75,767.47
  4. Step 4: Simplify right side
    103,788.40x = 11,752,591,553.21
  5. Step 5: Solve for x
    x = 11,752,591,553.21/103,788.40
  6. Step 6: Final answer
    x = 113,236.08

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.