Home / 122,132.52-168,539.94-68,419.80

Finding the Fourth Proportional to 122,132.52, 168,539.94 and 68,419.80

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Solution

The fourth proportional to 122,132.52, 168,539.94 and 68,419.80 is: 94,417.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,132.52 : 168,539.94 = 68,419.80 : x
  2. Step 2: Convert to fraction form
    122,132.52/168,539.94 = 68,419.80/x
  3. Step 3: Cross multiply
    122,132.52x = 168,539.94 × 68,419.80
  4. Step 4: Simplify right side
    122,132.52x = 11,531,468,986.81
  5. Step 5: Solve for x
    x = 11,531,468,986.81/122,132.52
  6. Step 6: Final answer
    x = 94,417.68

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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.