Home / 121,555.96-167,755.64-67,851.43

Finding the Fourth Proportional to 121,555.96, 167,755.64 and 67,851.43

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Solution

The fourth proportional to 121,555.96, 167,755.64 and 67,851.43 is: 93,639.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,555.96 : 167,755.64 = 67,851.43 : x
  2. Step 2: Convert to fraction form
    121,555.96/167,755.64 = 67,851.43/x
  3. Step 3: Cross multiply
    121,555.96x = 167,755.64 × 67,851.43
  4. Step 4: Simplify right side
    121,555.96x = 11,382,460,064.57
  5. Step 5: Solve for x
    x = 11,382,460,064.57/121,555.96
  6. Step 6: Final answer
    x = 93,639.67

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1.5x scale

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.