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Finding the Fourth Proportional to 100,769.49, 150,265.22 and 99,870.12

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Solution

The fourth proportional to 100,769.49, 150,265.22 and 99,870.12 is: 148,924.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,769.49 : 150,265.22 = 99,870.12 : x
  2. Step 2: Convert to fraction form
    100,769.49/150,265.22 = 99,870.12/x
  3. Step 3: Cross multiply
    100,769.49x = 150,265.22 × 99,870.12
  4. Step 4: Simplify right side
    100,769.49x = 15,007,005,053.88
  5. Step 5: Solve for x
    x = 15,007,005,053.88/100,769.49
  6. Step 6: Final answer
    x = 148,924.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.