Home / 121,435.12-167,626.64-91,307.94

Finding the Fourth Proportional to 121,435.12, 167,626.64 and 91,307.94

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Solution

The fourth proportional to 121,435.12, 167,626.64 and 91,307.94 is: 126,039.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,435.12 : 167,626.64 = 91,307.94 : x
  2. Step 2: Convert to fraction form
    121,435.12/167,626.64 = 91,307.94/x
  3. Step 3: Cross multiply
    121,435.12x = 167,626.64 × 91,307.94
  4. Step 4: Simplify right side
    121,435.12x = 15,305,643,187.52
  5. Step 5: Solve for x
    x = 15,305,643,187.52/121,435.12
  6. Step 6: Final answer
    x = 126,039.68

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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.