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Finding the Fourth Proportional to 128,461.74, 192,577.78 and 100,227.57

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Solution

The fourth proportional to 128,461.74, 192,577.78 and 100,227.57 is: 150,251.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,461.74 : 192,577.78 = 100,227.57 : x
  2. Step 2: Convert to fraction form
    128,461.74/192,577.78 = 100,227.57/x
  3. Step 3: Cross multiply
    128,461.74x = 192,577.78 × 100,227.57
  4. Step 4: Simplify right side
    128,461.74x = 19,301,602,925.39
  5. Step 5: Solve for x
    x = 19,301,602,925.39/128,461.74
  6. Step 6: Final answer
    x = 150,251.76

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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.