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Finding the Fourth Proportional to 121,200.97, 181,740.62 and 70,616.37

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Solution

The fourth proportional to 121,200.97, 181,740.62 and 70,616.37 is: 105,889.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,200.97 : 181,740.62 = 70,616.37 : x
  2. Step 2: Convert to fraction form
    121,200.97/181,740.62 = 70,616.37/x
  3. Step 3: Cross multiply
    121,200.97x = 181,740.62 × 70,616.37
  4. Step 4: Simplify right side
    121,200.97x = 12,833,862,865.95
  5. Step 5: Solve for x
    x = 12,833,862,865.95/121,200.97
  6. Step 6: Final answer
    x = 105,889.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.