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Finding the Fourth Proportional to 202,019.97, 278,820.48 and 121,528.86

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Solution

The fourth proportional to 202,019.97, 278,820.48 and 121,528.86 is: 167,729.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,019.97 : 278,820.48 = 121,528.86 : x
  2. Step 2: Convert to fraction form
    202,019.97/278,820.48 = 121,528.86/x
  3. Step 3: Cross multiply
    202,019.97x = 278,820.48 × 121,528.86
  4. Step 4: Simplify right side
    202,019.97x = 33,884,733,805.61
  5. Step 5: Solve for x
    x = 33,884,733,805.61/202,019.97
  6. Step 6: Final answer
    x = 167,729.62

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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.