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Finding the Fourth Proportional to 100,390.91, 150,511.48 and 60,400.53

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Solution

The fourth proportional to 100,390.91, 150,511.48 and 60,400.53 is: 90,555.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,390.91 : 150,511.48 = 60,400.53 : x
  2. Step 2: Convert to fraction form
    100,390.91/150,511.48 = 60,400.53/x
  3. Step 3: Cross multiply
    100,390.91x = 150,511.48 × 60,400.53
  4. Step 4: Simplify right side
    100,390.91x = 9,090,973,012.08
  5. Step 5: Solve for x
    x = 9,090,973,012.08/100,390.91
  6. Step 6: Final answer
    x = 90,555.74

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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.