Home / 103,255.22-154,864.36-65,703.76

Finding the Fourth Proportional to 103,255.22, 154,864.36 and 65,703.76

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Solution

The fourth proportional to 103,255.22, 154,864.36 and 65,703.76 is: 98,543.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,255.22 : 154,864.36 = 65,703.76 : x
  2. Step 2: Convert to fraction form
    103,255.22/154,864.36 = 65,703.76/x
  3. Step 3: Cross multiply
    103,255.22x = 154,864.36 × 65,703.76
  4. Step 4: Simplify right side
    103,255.22x = 10,175,170,067.38
  5. Step 5: Solve for x
    x = 10,175,170,067.38/103,255.22
  6. Step 6: Final answer
    x = 98,543.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.