Home / 113,711.55-170,428.96-80,441.20

Finding the Fourth Proportional to 113,711.55, 170,428.96 and 80,441.20

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Solution

The fourth proportional to 113,711.55, 170,428.96 and 80,441.20 is: 120,563.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,711.55 : 170,428.96 = 80,441.20 : x
  2. Step 2: Convert to fraction form
    113,711.55/170,428.96 = 80,441.20/x
  3. Step 3: Cross multiply
    113,711.55x = 170,428.96 × 80,441.20
  4. Step 4: Simplify right side
    113,711.55x = 13,709,510,370.74
  5. Step 5: Solve for x
    x = 13,709,510,370.74/113,711.55
  6. Step 6: Final answer
    x = 120,563.93

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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.