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Finding the Fourth Proportional to 137,482.65, 189,469.22 and 107,220.15

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Solution

The fourth proportional to 137,482.65, 189,469.22 and 107,220.15 is: 147,763.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,482.65 : 189,469.22 = 107,220.15 : x
  2. Step 2: Convert to fraction form
    137,482.65/189,469.22 = 107,220.15/x
  3. Step 3: Cross multiply
    137,482.65x = 189,469.22 × 107,220.15
  4. Step 4: Simplify right side
    137,482.65x = 20,314,917,652.68
  5. Step 5: Solve for x
    x = 20,314,917,652.68/137,482.65
  6. Step 6: Final answer
    x = 147,763.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.