Home / 155,217.90-214,188.87-87,222.02

Finding the Fourth Proportional to 155,217.90, 214,188.87 and 87,222.02

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Solution

The fourth proportional to 155,217.90, 214,188.87 and 87,222.02 is: 120,359.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,217.90 : 214,188.87 = 87,222.02 : x
  2. Step 2: Convert to fraction form
    155,217.90/214,188.87 = 87,222.02/x
  3. Step 3: Cross multiply
    155,217.90x = 214,188.87 × 87,222.02
  4. Step 4: Simplify right side
    155,217.90x = 18,681,984,831.97
  5. Step 5: Solve for x
    x = 18,681,984,831.97/155,217.90
  6. Step 6: Final answer
    x = 120,359.73

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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.