Home / 155,343.43-214,371.89-87,360.38

Finding the Fourth Proportional to 155,343.43, 214,371.89 and 87,360.38

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Solution

The fourth proportional to 155,343.43, 214,371.89 and 87,360.38 is: 120,556.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,343.43 : 214,371.89 = 87,360.38 : x
  2. Step 2: Convert to fraction form
    155,343.43/214,371.89 = 87,360.38/x
  3. Step 3: Cross multiply
    155,343.43x = 214,371.89 × 87,360.38
  4. Step 4: Simplify right side
    155,343.43x = 18,727,609,870.85
  5. Step 5: Solve for x
    x = 18,727,609,870.85/155,343.43
  6. Step 6: Final answer
    x = 120,556.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.