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Finding the Fourth Proportional to 121,113.63, 167,137.92 and 67,400.91

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Solution

The fourth proportional to 121,113.63, 167,137.92 and 67,400.91 is: 93,013.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,113.63 : 167,137.92 = 67,400.91 : x
  2. Step 2: Convert to fraction form
    121,113.63/167,137.92 = 67,400.91/x
  3. Step 3: Cross multiply
    121,113.63x = 167,137.92 × 67,400.91
  4. Step 4: Simplify right side
    121,113.63x = 11,265,247,903.51
  5. Step 5: Solve for x
    x = 11,265,247,903.51/121,113.63
  6. Step 6: Final answer
    x = 93,013.87

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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.