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Finding the Fourth Proportional to 121,194.60, 181,731.06 and 70,609.98

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Solution

The fourth proportional to 121,194.60, 181,731.06 and 70,609.98 is: 105,879.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,194.60 : 181,731.06 = 70,609.98 : x
  2. Step 2: Convert to fraction form
    121,194.60/181,731.06 = 70,609.98/x
  3. Step 3: Cross multiply
    121,194.60x = 181,731.06 × 70,609.98
  4. Step 4: Simplify right side
    121,194.60x = 12,832,026,171.23
  5. Step 5: Solve for x
    x = 12,832,026,171.23/121,194.60
  6. Step 6: Final answer
    x = 105,879.52

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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.