Home / 112,811.83-155,639.13-67,491.11

Finding the Fourth Proportional to 112,811.83, 155,639.13 and 67,491.11

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Solution

The fourth proportional to 112,811.83, 155,639.13 and 67,491.11 is: 93,113.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,811.83 : 155,639.13 = 67,491.11 : x
  2. Step 2: Convert to fraction form
    112,811.83/155,639.13 = 67,491.11/x
  3. Step 3: Cross multiply
    112,811.83x = 155,639.13 × 67,491.11
  4. Step 4: Simplify right side
    112,811.83x = 10,504,257,643.13
  5. Step 5: Solve for x
    x = 10,504,257,643.13/112,811.83
  6. Step 6: Final answer
    x = 93,113.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.