Home / 213,823.16-320,983.20-125,140.31

Finding the Fourth Proportional to 213,823.16, 320,983.20 and 125,140.31

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Solution

The fourth proportional to 213,823.16, 320,983.20 and 125,140.31 is: 187,855.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,823.16 : 320,983.20 = 125,140.31 : x
  2. Step 2: Convert to fraction form
    213,823.16/320,983.20 = 125,140.31/x
  3. Step 3: Cross multiply
    213,823.16x = 320,983.20 × 125,140.31
  4. Step 4: Simplify right side
    213,823.16x = 40,167,935,547.88
  5. Step 5: Solve for x
    x = 40,167,935,547.88/213,823.16
  6. Step 6: Final answer
    x = 187,855.87

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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.