Home / 155,353.43-214,385.69-87,370.38

Finding the Fourth Proportional to 155,353.43, 214,385.69 and 87,370.38

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Solution

The fourth proportional to 155,353.43, 214,385.69 and 87,370.38 is: 120,569.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,353.43 : 214,385.69 = 87,370.38 : x
  2. Step 2: Convert to fraction form
    155,353.43/214,385.69 = 87,370.38/x
  3. Step 3: Cross multiply
    155,353.43x = 214,385.69 × 87,370.38
  4. Step 4: Simplify right side
    155,353.43x = 18,730,959,201.86
  5. Step 5: Solve for x
    x = 18,730,959,201.86/155,353.43
  6. Step 6: Final answer
    x = 120,569.98

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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.