Home / 105,265.09-157,614.69-80,185.67

Finding the Fourth Proportional to 105,265.09, 157,614.69 and 80,185.67

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Solution

The fourth proportional to 105,265.09, 157,614.69 and 80,185.67 is: 120,062.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,265.09 : 157,614.69 = 80,185.67 : x
  2. Step 2: Convert to fraction form
    105,265.09/157,614.69 = 80,185.67/x
  3. Step 3: Cross multiply
    105,265.09x = 157,614.69 × 80,185.67
  4. Step 4: Simplify right side
    105,265.09x = 12,638,439,519.49
  5. Step 5: Solve for x
    x = 12,638,439,519.49/105,265.09
  6. Step 6: Final answer
    x = 120,062.97

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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.