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Finding the Fourth Proportional to 144,105.80, 216,029.10 and 91,488.20

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Solution

The fourth proportional to 144,105.80, 216,029.10 and 91,488.20 is: 137,150.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,105.80 : 216,029.10 = 91,488.20 : x
  2. Step 2: Convert to fraction form
    144,105.80/216,029.10 = 91,488.20/x
  3. Step 3: Cross multiply
    144,105.80x = 216,029.10 × 91,488.20
  4. Step 4: Simplify right side
    144,105.80x = 19,764,113,506.62
  5. Step 5: Solve for x
    x = 19,764,113,506.62/144,105.80
  6. Step 6: Final answer
    x = 137,150.02

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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.