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Finding the Fourth Proportional to 121,570.48, 167,566.44 and 81,269.54

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Solution

The fourth proportional to 121,570.48, 167,566.44 and 81,269.54 is: 112,017.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,570.48 : 167,566.44 = 81,269.54 : x
  2. Step 2: Convert to fraction form
    121,570.48/167,566.44 = 81,269.54/x
  3. Step 3: Cross multiply
    121,570.48x = 167,566.44 × 81,269.54
  4. Step 4: Simplify right side
    121,570.48x = 13,618,047,498.24
  5. Step 5: Solve for x
    x = 13,618,047,498.24/121,570.48
  6. Step 6: Final answer
    x = 112,017.72

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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.