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Finding the Fourth Proportional to 100,553.20, 150,829.80 and 66,873.40

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Solution

The fourth proportional to 100,553.20, 150,829.80 and 66,873.40 is: 100,310.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,553.20 : 150,829.80 = 66,873.40 : x
  2. Step 2: Convert to fraction form
    100,553.20/150,829.80 = 66,873.40/x
  3. Step 3: Cross multiply
    100,553.20x = 150,829.80 × 66,873.40
  4. Step 4: Simplify right side
    100,553.20x = 10,086,501,547.32
  5. Step 5: Solve for x
    x = 10,086,501,547.32/100,553.20
  6. Step 6: Final answer
    x = 100,310.10

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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.