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Finding the Fourth Proportional to 121,412.82, 167,562.17 and 73,030.31

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Solution

The fourth proportional to 121,412.82, 167,562.17 and 73,030.31 is: 100,789.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,412.82 : 167,562.17 = 73,030.31 : x
  2. Step 2: Convert to fraction form
    121,412.82/167,562.17 = 73,030.31/x
  3. Step 3: Cross multiply
    121,412.82x = 167,562.17 × 73,030.31
  4. Step 4: Simplify right side
    121,412.82x = 12,237,116,016.41
  5. Step 5: Solve for x
    x = 12,237,116,016.41/121,412.82
  6. Step 6: Final answer
    x = 100,789.32

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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.