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Finding the Fourth Proportional to 121,353.71, 167,468.91 and 67,642.14

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Solution

The fourth proportional to 121,353.71, 167,468.91 and 67,642.14 is: 93,346.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,353.71 : 167,468.91 = 67,642.14 : x
  2. Step 2: Convert to fraction form
    121,353.71/167,468.91 = 67,642.14/x
  3. Step 3: Cross multiply
    121,353.71x = 167,468.91 × 67,642.14
  4. Step 4: Simplify right side
    121,353.71x = 11,327,955,455.87
  5. Step 5: Solve for x
    x = 11,327,955,455.87/121,353.71
  6. Step 6: Final answer
    x = 93,346.59

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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.