Home / 100,500.48-150,439.68-85,570.56

Finding the Fourth Proportional to 100,500.48, 150,439.68 and 85,570.56

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Solution

The fourth proportional to 100,500.48, 150,439.68 and 85,570.56 is: 128,091.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,500.48 : 150,439.68 = 85,570.56 : x
  2. Step 2: Convert to fraction form
    100,500.48/150,439.68 = 85,570.56/x
  3. Step 3: Cross multiply
    100,500.48x = 150,439.68 × 85,570.56
  4. Step 4: Simplify right side
    100,500.48x = 12,873,207,663.82
  5. Step 5: Solve for x
    x = 12,873,207,663.82/100,500.48
  6. Step 6: Final answer
    x = 128,091.01

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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.