Home / 99,909.87-149,767.40-39,920.46

Finding the Fourth Proportional to 99,909.87, 149,767.40 and 39,920.46

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Solution

The fourth proportional to 99,909.87, 149,767.40 and 39,920.46 is: 59,841.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,909.87 : 149,767.40 = 39,920.46 : x
  2. Step 2: Convert to fraction form
    99,909.87/149,767.40 = 39,920.46/x
  3. Step 3: Cross multiply
    99,909.87x = 149,767.40 × 39,920.46
  4. Step 4: Simplify right side
    99,909.87x = 5,978,783,501.00
  5. Step 5: Solve for x
    x = 5,978,783,501.00/99,909.87
  6. Step 6: Final answer
    x = 59,841.77

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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.