Home / 121,936.56-168,287.88-74,187.04

Finding the Fourth Proportional to 121,936.56, 168,287.88 and 74,187.04

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Solution

The fourth proportional to 121,936.56, 168,287.88 and 74,187.04 is: 102,387.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,936.56 : 168,287.88 = 74,187.04 : x
  2. Step 2: Convert to fraction form
    121,936.56/168,287.88 = 74,187.04/x
  3. Step 3: Cross multiply
    121,936.56x = 168,287.88 × 74,187.04
  4. Step 4: Simplify right side
    121,936.56x = 12,484,779,685.08
  5. Step 5: Solve for x
    x = 12,484,779,685.08/121,936.56
  6. Step 6: Final answer
    x = 102,387.50

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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.