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Finding the Fourth Proportional to 144,099.80, 216,020.10 and 91,482.20

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Solution

The fourth proportional to 144,099.80, 216,020.10 and 91,482.20 is: 137,141.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,099.80 : 216,020.10 = 91,482.20 : x
  2. Step 2: Convert to fraction form
    144,099.80/216,020.10 = 91,482.20/x
  3. Step 3: Cross multiply
    144,099.80x = 216,020.10 × 91,482.20
  4. Step 4: Simplify right side
    144,099.80x = 19,761,993,992.22
  5. Step 5: Solve for x
    x = 19,761,993,992.22/144,099.80
  6. Step 6: Final answer
    x = 137,141.02

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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.