Home / 155,133.60-214,109.78-129,251.13

Finding the Fourth Proportional to 155,133.60, 214,109.78 and 129,251.13

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Solution

The fourth proportional to 155,133.60, 214,109.78 and 129,251.13 is: 178,387.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,133.60 : 214,109.78 = 129,251.13 : x
  2. Step 2: Convert to fraction form
    155,133.60/214,109.78 = 129,251.13/x
  3. Step 3: Cross multiply
    155,133.60x = 214,109.78 × 129,251.13
  4. Step 4: Simplify right side
    155,133.60x = 27,673,931,009.05
  5. Step 5: Solve for x
    x = 27,673,931,009.05/155,133.60
  6. Step 6: Final answer
    x = 178,387.73

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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.