Home / 155,387.79-214,451.73-90,876.75

Finding the Fourth Proportional to 155,387.79, 214,451.73 and 90,876.75

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Solution

The fourth proportional to 155,387.79, 214,451.73 and 90,876.75 is: 125,419.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,387.79 : 214,451.73 = 90,876.75 : x
  2. Step 2: Convert to fraction form
    155,387.79/214,451.73 = 90,876.75/x
  3. Step 3: Cross multiply
    155,387.79x = 214,451.73 × 90,876.75
  4. Step 4: Simplify right side
    155,387.79x = 19,488,676,254.28
  5. Step 5: Solve for x
    x = 19,488,676,254.28/155,387.79
  6. Step 6: Final answer
    x = 125,419.61

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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.