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Finding the Fourth Proportional to 135,436.05, 203,186.88 and 40,666.05

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Solution

The fourth proportional to 135,436.05, 203,186.88 and 40,666.05 is: 61,008.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,436.05 : 203,186.88 = 40,666.05 : x
  2. Step 2: Convert to fraction form
    135,436.05/203,186.88 = 40,666.05/x
  3. Step 3: Cross multiply
    135,436.05x = 203,186.88 × 40,666.05
  4. Step 4: Simplify right side
    135,436.05x = 8,262,807,821.42
  5. Step 5: Solve for x
    x = 8,262,807,821.42/135,436.05
  6. Step 6: Final answer
    x = 61,008.93

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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.