Home / 155,280.85-214,295.17-87,319.22

Finding the Fourth Proportional to 155,280.85, 214,295.17 and 87,319.22

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Solution

The fourth proportional to 155,280.85, 214,295.17 and 87,319.22 is: 120,504.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,280.85 : 214,295.17 = 87,319.22 : x
  2. Step 2: Convert to fraction form
    155,280.85/214,295.17 = 87,319.22/x
  3. Step 3: Cross multiply
    155,280.85x = 214,295.17 × 87,319.22
  4. Step 4: Simplify right side
    155,280.85x = 18,712,085,968.12
  5. Step 5: Solve for x
    x = 18,712,085,968.12/155,280.85
  6. Step 6: Final answer
    x = 120,504.79

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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.