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Finding the Fourth Proportional to 99,325.60, 148,858.80 and 40,112.80

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Solution

The fourth proportional to 99,325.60, 148,858.80 and 40,112.80 is: 60,116.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,325.60 : 148,858.80 = 40,112.80 : x
  2. Step 2: Convert to fraction form
    99,325.60/148,858.80 = 40,112.80/x
  3. Step 3: Cross multiply
    99,325.60x = 148,858.80 × 40,112.80
  4. Step 4: Simplify right side
    99,325.60x = 5,971,143,272.64
  5. Step 5: Solve for x
    x = 5,971,143,272.64/99,325.60
  6. Step 6: Final answer
    x = 60,116.86

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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.