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Finding the Fourth Proportional to 121,178.98, 167,202.57 and 73,404.58

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Solution

The fourth proportional to 121,178.98, 167,202.57 and 73,404.58 is: 101,283.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,178.98 : 167,202.57 = 73,404.58 : x
  2. Step 2: Convert to fraction form
    121,178.98/167,202.57 = 73,404.58/x
  3. Step 3: Cross multiply
    121,178.98x = 167,202.57 × 73,404.58
  4. Step 4: Simplify right side
    121,178.98x = 12,273,434,425.77
  5. Step 5: Solve for x
    x = 12,273,434,425.77/121,178.98
  6. Step 6: Final answer
    x = 101,283.53

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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.