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Finding the Fourth Proportional to 121,076, 167,084.96 and 70,775.36

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Solution

The fourth proportional to 121,076, 167,084.96 and 70,775.36 is: 97,670.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,076 : 167,084.96 = 70,775.36 : x
  2. Step 2: Convert to fraction form
    121,076/167,084.96 = 70,775.36/x
  3. Step 3: Cross multiply
    121,076x = 167,084.96 × 70,775.36
  4. Step 4: Simplify right side
    121,076x = 11,825,498,194.59
  5. Step 5: Solve for x
    x = 11,825,498,194.59/121,076
  6. Step 6: Final answer
    x = 97,670.04

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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.