Home / 155,387.28-214,451.04-90,876.25

Finding the Fourth Proportional to 155,387.28, 214,451.04 and 90,876.25

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Solution

The fourth proportional to 155,387.28, 214,451.04 and 90,876.25 is: 125,418.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,387.28 : 214,451.04 = 90,876.25 : x
  2. Step 2: Convert to fraction form
    155,387.28/214,451.04 = 90,876.25/x
  3. Step 3: Cross multiply
    155,387.28x = 214,451.04 × 90,876.25
  4. Step 4: Simplify right side
    155,387.28x = 19,488,506,323.80
  5. Step 5: Solve for x
    x = 19,488,506,323.80/155,387.28
  6. Step 6: Final answer
    x = 125,418.93

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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.