Home / 103,631.40-155,440.35-27,728.91

Finding the Fourth Proportional to 103,631.40, 155,440.35 and 27,728.91

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Solution

The fourth proportional to 103,631.40, 155,440.35 and 27,728.91 is: 41,591.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,631.40 : 155,440.35 = 27,728.91 : x
  2. Step 2: Convert to fraction form
    103,631.40/155,440.35 = 27,728.91/x
  3. Step 3: Cross multiply
    103,631.40x = 155,440.35 × 27,728.91
  4. Step 4: Simplify right side
    103,631.40x = 4,310,191,475.52
  5. Step 5: Solve for x
    x = 4,310,191,475.52/103,631.40
  6. Step 6: Final answer
    x = 41,591.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.