Home / 121,773.12-168,098.64-74,041.68

Finding the Fourth Proportional to 121,773.12, 168,098.64 and 74,041.68

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Solution

The fourth proportional to 121,773.12, 168,098.64 and 74,041.68 is: 102,208.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,773.12 : 168,098.64 = 74,041.68 : x
  2. Step 2: Convert to fraction form
    121,773.12/168,098.64 = 74,041.68/x
  3. Step 3: Cross multiply
    121,773.12x = 168,098.64 × 74,041.68
  4. Step 4: Simplify right side
    121,773.12x = 12,446,305,711.32
  5. Step 5: Solve for x
    x = 12,446,305,711.32/121,773.12
  6. Step 6: Final answer
    x = 102,208.97

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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.