Home / 112,812.08-155,639.48-67,491.36

Finding the Fourth Proportional to 112,812.08, 155,639.48 and 67,491.36

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Solution

The fourth proportional to 112,812.08, 155,639.48 and 67,491.36 is: 93,113.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,812.08 : 155,639.48 = 67,491.36 : x
  2. Step 2: Convert to fraction form
    112,812.08/155,639.48 = 67,491.36/x
  3. Step 3: Cross multiply
    112,812.08x = 155,639.48 × 67,491.36
  4. Step 4: Simplify right side
    112,812.08x = 10,504,319,837.44
  5. Step 5: Solve for x
    x = 10,504,319,837.44/112,812.08
  6. Step 6: Final answer
    x = 93,113.44

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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.