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Finding the Fourth Proportional to 100,260.77, 150,453.56 and 90,917.72

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Solution

The fourth proportional to 100,260.77, 150,453.56 and 90,917.72 is: 136,433.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,260.77 : 150,453.56 = 90,917.72 : x
  2. Step 2: Convert to fraction form
    100,260.77/150,453.56 = 90,917.72/x
  3. Step 3: Cross multiply
    100,260.77x = 150,453.56 × 90,917.72
  4. Step 4: Simplify right side
    100,260.77x = 13,678,894,116.11
  5. Step 5: Solve for x
    x = 13,678,894,116.11/100,260.77
  6. Step 6: Final answer
    x = 136,433.17

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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.