Home / 103,801.03-155,132.71-75,780.09

Finding the Fourth Proportional to 103,801.03, 155,132.71 and 75,780.09

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Solution

The fourth proportional to 103,801.03, 155,132.71 and 75,780.09 is: 113,254.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,801.03 : 155,132.71 = 75,780.09 : x
  2. Step 2: Convert to fraction form
    103,801.03/155,132.71 = 75,780.09/x
  3. Step 3: Cross multiply
    103,801.03x = 155,132.71 × 75,780.09
  4. Step 4: Simplify right side
    103,801.03x = 11,755,970,725.74
  5. Step 5: Solve for x
    x = 11,755,970,725.74/103,801.03
  6. Step 6: Final answer
    x = 113,254.86

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1.5x scale

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.