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Finding the Fourth Proportional to 121,366.44, 167,486.04 and 70,389

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Solution

The fourth proportional to 121,366.44, 167,486.04 and 70,389 is: 97,137.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,366.44 : 167,486.04 = 70,389 : x
  2. Step 2: Convert to fraction form
    121,366.44/167,486.04 = 70,389/x
  3. Step 3: Cross multiply
    121,366.44x = 167,486.04 × 70,389
  4. Step 4: Simplify right side
    121,366.44x = 11,789,174,869.56
  5. Step 5: Solve for x
    x = 11,789,174,869.56/121,366.44
  6. Step 6: Final answer
    x = 97,137.02

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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.