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Finding the Fourth Proportional to 121,459.86, 167,614.86 and 67,748.32

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Solution

The fourth proportional to 121,459.86, 167,614.86 and 67,748.32 is: 93,492.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,459.86 : 167,614.86 = 67,748.32 : x
  2. Step 2: Convert to fraction form
    121,459.86/167,614.86 = 67,748.32/x
  3. Step 3: Cross multiply
    121,459.86x = 167,614.86 × 67,748.32
  4. Step 4: Simplify right side
    121,459.86x = 11,355,625,172.04
  5. Step 5: Solve for x
    x = 11,355,625,172.04/121,459.86
  6. Step 6: Final answer
    x = 93,492.82

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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.