Home / 121,871.02-168,190.59-68,161.05

Finding the Fourth Proportional to 121,871.02, 168,190.59 and 68,161.05

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Solution

The fourth proportional to 121,871.02, 168,190.59 and 68,161.05 is: 94,067.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,871.02 : 168,190.59 = 68,161.05 : x
  2. Step 2: Convert to fraction form
    121,871.02/168,190.59 = 68,161.05/x
  3. Step 3: Cross multiply
    121,871.02x = 168,190.59 × 68,161.05
  4. Step 4: Simplify right side
    121,871.02x = 11,464,047,214.52
  5. Step 5: Solve for x
    x = 11,464,047,214.52/121,871.02
  6. Step 6: Final answer
    x = 94,067.05

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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.