Home / 82,011.11-122,803.83-70,240.53

Finding the Fourth Proportional to 82,011.11, 122,803.83 and 70,240.53

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Solution

The fourth proportional to 82,011.11, 122,803.83 and 70,240.53 is: 105,178.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,011.11 : 122,803.83 = 70,240.53 : x
  2. Step 2: Convert to fraction form
    82,011.11/122,803.83 = 70,240.53/x
  3. Step 3: Cross multiply
    82,011.11x = 122,803.83 × 70,240.53
  4. Step 4: Simplify right side
    82,011.11x = 8,625,806,105.23
  5. Step 5: Solve for x
    x = 8,625,806,105.23/82,011.11
  6. Step 6: Final answer
    x = 105,178.51

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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.