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Finding the Fourth Proportional to 134,482.20, 201,723.30 and 90,245.40

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Solution

The fourth proportional to 134,482.20, 201,723.30 and 90,245.40 is: 135,368.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,482.20 : 201,723.30 = 90,245.40 : x
  2. Step 2: Convert to fraction form
    134,482.20/201,723.30 = 90,245.40/x
  3. Step 3: Cross multiply
    134,482.20x = 201,723.30 × 90,245.40
  4. Step 4: Simplify right side
    134,482.20x = 18,204,599,897.82
  5. Step 5: Solve for x
    x = 18,204,599,897.82/134,482.20
  6. Step 6: Final answer
    x = 135,368.10

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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.