Home / 103,626.70-155,440.05-81,076.30

Finding the Fourth Proportional to 103,626.70, 155,440.05 and 81,076.30

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Solution

The fourth proportional to 103,626.70, 155,440.05 and 81,076.30 is: 121,614.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,626.70 : 155,440.05 = 81,076.30 : x
  2. Step 2: Convert to fraction form
    103,626.70/155,440.05 = 81,076.30/x
  3. Step 3: Cross multiply
    103,626.70x = 155,440.05 × 81,076.30
  4. Step 4: Simplify right side
    103,626.70x = 12,602,504,125.82
  5. Step 5: Solve for x
    x = 12,602,504,125.82/103,626.70
  6. Step 6: Final answer
    x = 121,614.45

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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.