Home / 210,010.80-315,016.20-115,204.35

Finding the Fourth Proportional to 210,010.80, 315,016.20 and 115,204.35

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Solution

The fourth proportional to 210,010.80, 315,016.20 and 115,204.35 is: 172,806.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,010.80 : 315,016.20 = 115,204.35 : x
  2. Step 2: Convert to fraction form
    210,010.80/315,016.20 = 115,204.35/x
  3. Step 3: Cross multiply
    210,010.80x = 315,016.20 × 115,204.35
  4. Step 4: Simplify right side
    210,010.80x = 36,291,236,560.47
  5. Step 5: Solve for x
    x = 36,291,236,560.47/210,010.80
  6. Step 6: Final answer
    x = 172,806.53

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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.