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Finding the Fourth Proportional to 121,732.76, 167,988.07 and 68,018.22

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Solution

The fourth proportional to 121,732.76, 167,988.07 and 68,018.22 is: 93,863.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,732.76 : 167,988.07 = 68,018.22 : x
  2. Step 2: Convert to fraction form
    121,732.76/167,988.07 = 68,018.22/x
  3. Step 3: Cross multiply
    121,732.76x = 167,988.07 × 68,018.22
  4. Step 4: Simplify right side
    121,732.76x = 11,426,248,322.60
  5. Step 5: Solve for x
    x = 11,426,248,322.60/121,732.76
  6. Step 6: Final answer
    x = 93,863.38

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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.