Home / 210,389.13-315,600.03-70,147.62

Finding the Fourth Proportional to 210,389.13, 315,600.03 and 70,147.62

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Solution

The fourth proportional to 210,389.13, 315,600.03 and 70,147.62 is: 105,226.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,389.13 : 315,600.03 = 70,147.62 : x
  2. Step 2: Convert to fraction form
    210,389.13/315,600.03 = 70,147.62/x
  3. Step 3: Cross multiply
    210,389.13x = 315,600.03 × 70,147.62
  4. Step 4: Simplify right side
    210,389.13x = 22,138,590,976.43
  5. Step 5: Solve for x
    x = 22,138,590,976.43/210,389.13
  6. Step 6: Final answer
    x = 105,226.88

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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.