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Finding the Fourth Proportional to 134,998.70, 202,498.05 and 127,781.60

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Solution

The fourth proportional to 134,998.70, 202,498.05 and 127,781.60 is: 191,672.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,998.70 : 202,498.05 = 127,781.60 : x
  2. Step 2: Convert to fraction form
    134,998.70/202,498.05 = 127,781.60/x
  3. Step 3: Cross multiply
    134,998.70x = 202,498.05 × 127,781.60
  4. Step 4: Simplify right side
    134,998.70x = 25,875,524,825.88
  5. Step 5: Solve for x
    x = 25,875,524,825.88/134,998.70
  6. Step 6: Final answer
    x = 191,672.40

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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.