Home / 210,024.20-315,036.30-76,908.80

Finding the Fourth Proportional to 210,024.20, 315,036.30 and 76,908.80

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Solution

The fourth proportional to 210,024.20, 315,036.30 and 76,908.80 is: 115,363.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,024.20 : 315,036.30 = 76,908.80 : x
  2. Step 2: Convert to fraction form
    210,024.20/315,036.30 = 76,908.80/x
  3. Step 3: Cross multiply
    210,024.20x = 315,036.30 × 76,908.80
  4. Step 4: Simplify right side
    210,024.20x = 24,229,063,789.44
  5. Step 5: Solve for x
    x = 24,229,063,789.44/210,024.20
  6. Step 6: Final answer
    x = 115,363.20

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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.