Home / 99,708.12-149,469.84-52,313.40

Finding the Fourth Proportional to 99,708.12, 149,469.84 and 52,313.40

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Solution

The fourth proportional to 99,708.12, 149,469.84 and 52,313.40 is: 78,421.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,708.12 : 149,469.84 = 52,313.40 : x
  2. Step 2: Convert to fraction form
    99,708.12/149,469.84 = 52,313.40/x
  3. Step 3: Cross multiply
    99,708.12x = 149,469.84 × 52,313.40
  4. Step 4: Simplify right side
    99,708.12x = 7,819,275,527.86
  5. Step 5: Solve for x
    x = 7,819,275,527.86/99,708.12
  6. Step 6: Final answer
    x = 78,421.65

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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.