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Finding the Fourth Proportional to 99,661.60, 149,482.68 and 40,500.80

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Solution

The fourth proportional to 99,661.60, 149,482.68 and 40,500.80 is: 60,747.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,661.60 : 149,482.68 = 40,500.80 : x
  2. Step 2: Convert to fraction form
    99,661.60/149,482.68 = 40,500.80/x
  3. Step 3: Cross multiply
    99,661.60x = 149,482.68 × 40,500.80
  4. Step 4: Simplify right side
    99,661.60x = 6,054,168,126.14
  5. Step 5: Solve for x
    x = 6,054,168,126.14/99,661.60
  6. Step 6: Final answer
    x = 60,747.25

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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.