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Finding the Fourth Proportional to 103,042.70, 154,564.05 and 100,126.70

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Solution

The fourth proportional to 103,042.70, 154,564.05 and 100,126.70 is: 150,190.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,042.70 : 154,564.05 = 100,126.70 : x
  2. Step 2: Convert to fraction form
    103,042.70/154,564.05 = 100,126.70/x
  3. Step 3: Cross multiply
    103,042.70x = 154,564.05 × 100,126.70
  4. Step 4: Simplify right side
    103,042.70x = 15,475,988,265.14
  5. Step 5: Solve for x
    x = 15,475,988,265.14/103,042.70
  6. Step 6: Final answer
    x = 150,190.05

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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.