Home / 112,810.08-155,636.71-67,489.36

Finding the Fourth Proportional to 112,810.08, 155,636.71 and 67,489.36

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Solution

The fourth proportional to 112,810.08, 155,636.71 and 67,489.36 is: 93,110.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,810.08 : 155,636.71 = 67,489.36 : x
  2. Step 2: Convert to fraction form
    112,810.08/155,636.71 = 67,489.36/x
  3. Step 3: Cross multiply
    112,810.08x = 155,636.71 × 67,489.36
  4. Step 4: Simplify right side
    112,810.08x = 10,503,821,950.41
  5. Step 5: Solve for x
    x = 10,503,821,950.41/112,810.08
  6. Step 6: Final answer
    x = 93,110.67

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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.