Home / 121,133.48-167,169-67,420.76

Finding the Fourth Proportional to 121,133.48, 167,169 and 67,420.76

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Solution

The fourth proportional to 121,133.48, 167,169 and 67,420.76 is: 93,043.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,133.48 : 167,169 = 67,420.76 : x
  2. Step 2: Convert to fraction form
    121,133.48/167,169 = 67,420.76/x
  3. Step 3: Cross multiply
    121,133.48x = 167,169 × 67,420.76
  4. Step 4: Simplify right side
    121,133.48x = 11,270,661,028.44
  5. Step 5: Solve for x
    x = 11,270,661,028.44/121,133.48
  6. Step 6: Final answer
    x = 93,043.32

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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.