Home / 103,974.20-155,209.18-91,362.90

Finding the Fourth Proportional to 103,974.20, 155,209.18 and 91,362.90

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Solution

The fourth proportional to 103,974.20, 155,209.18 and 91,362.90 is: 136,383.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,974.20 : 155,209.18 = 91,362.90 : x
  2. Step 2: Convert to fraction form
    103,974.20/155,209.18 = 91,362.90/x
  3. Step 3: Cross multiply
    103,974.20x = 155,209.18 × 91,362.90
  4. Step 4: Simplify right side
    103,974.20x = 14,180,360,791.42
  5. Step 5: Solve for x
    x = 14,180,360,791.42/103,974.20
  6. Step 6: Final answer
    x = 136,383.46

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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.