Home / 99,216.20-148,636.64-76,920.42

Finding the Fourth Proportional to 99,216.20, 148,636.64 and 76,920.42

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Solution

The fourth proportional to 99,216.20, 148,636.64 and 76,920.42 is: 115,235.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,216.20 : 148,636.64 = 76,920.42 : x
  2. Step 2: Convert to fraction form
    99,216.20/148,636.64 = 76,920.42/x
  3. Step 3: Cross multiply
    99,216.20x = 148,636.64 × 76,920.42
  4. Step 4: Simplify right side
    99,216.20x = 11,433,192,776.19
  5. Step 5: Solve for x
    x = 11,433,192,776.19/99,216.20
  6. Step 6: Final answer
    x = 115,235.14

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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.