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Finding the Fourth Proportional to 121,396.96, 167,483.84 and 70,381.61

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Solution

The fourth proportional to 121,396.96, 167,483.84 and 70,381.61 is: 97,101.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,396.96 : 167,483.84 = 70,381.61 : x
  2. Step 2: Convert to fraction form
    121,396.96/167,483.84 = 70,381.61/x
  3. Step 3: Cross multiply
    121,396.96x = 167,483.84 × 70,381.61
  4. Step 4: Simplify right side
    121,396.96x = 11,787,781,746.92
  5. Step 5: Solve for x
    x = 11,787,781,746.92/121,396.96
  6. Step 6: Final answer
    x = 97,101.13

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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.