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Finding the Fourth Proportional to 100,262.77, 150,456.56 and 90,919.72

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Solution

The fourth proportional to 100,262.77, 150,456.56 and 90,919.72 is: 136,436.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,262.77 : 150,456.56 = 90,919.72 : x
  2. Step 2: Convert to fraction form
    100,262.77/150,456.56 = 90,919.72/x
  3. Step 3: Cross multiply
    100,262.77x = 150,456.56 × 90,919.72
  4. Step 4: Simplify right side
    100,262.77x = 13,679,468,307.36
  5. Step 5: Solve for x
    x = 13,679,468,307.36/100,262.77
  6. Step 6: Final answer
    x = 136,436.17

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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.