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Finding the Fourth Proportional to 99,794.80, 149,519.40 and 64,716.40

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Solution

The fourth proportional to 99,794.80, 149,519.40 and 64,716.40 is: 96,962.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,794.80 : 149,519.40 = 64,716.40 : x
  2. Step 2: Convert to fraction form
    99,794.80/149,519.40 = 64,716.40/x
  3. Step 3: Cross multiply
    99,794.80x = 149,519.40 × 64,716.40
  4. Step 4: Simplify right side
    99,794.80x = 9,676,357,298.16
  5. Step 5: Solve for x
    x = 9,676,357,298.16/99,794.80
  6. Step 6: Final answer
    x = 96,962.54

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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.