Home / 115,274.20-173,105.70-76,005.40

Finding the Fourth Proportional to 115,274.20, 173,105.70 and 76,005.40

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Solution

The fourth proportional to 115,274.20, 173,105.70 and 76,005.40 is: 114,136.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,274.20 : 173,105.70 = 76,005.40 : x
  2. Step 2: Convert to fraction form
    115,274.20/173,105.70 = 76,005.40/x
  3. Step 3: Cross multiply
    115,274.20x = 173,105.70 × 76,005.40
  4. Step 4: Simplify right side
    115,274.20x = 13,156,967,970.78
  5. Step 5: Solve for x
    x = 13,156,967,970.78/115,274.20
  6. Step 6: Final answer
    x = 114,136.28

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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.