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Finding the Fourth Proportional to 121,497.48, 167,669.84 and 76,171.22

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Solution

The fourth proportional to 121,497.48, 167,669.84 and 76,171.22 is: 105,118.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,497.48 : 167,669.84 = 76,171.22 : x
  2. Step 2: Convert to fraction form
    121,497.48/167,669.84 = 76,171.22/x
  3. Step 3: Cross multiply
    121,497.48x = 167,669.84 × 76,171.22
  4. Step 4: Simplify right side
    121,497.48x = 12,771,616,270.00
  5. Step 5: Solve for x
    x = 12,771,616,270.00/121,497.48
  6. Step 6: Final answer
    x = 105,118.36

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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.