Home / 123,729.94-170,750.40-67,141.18

Finding the Fourth Proportional to 123,729.94, 170,750.40 and 67,141.18

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Solution

The fourth proportional to 123,729.94, 170,750.40 and 67,141.18 is: 92,656.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,729.94 : 170,750.40 = 67,141.18 : x
  2. Step 2: Convert to fraction form
    123,729.94/170,750.40 = 67,141.18/x
  3. Step 3: Cross multiply
    123,729.94x = 170,750.40 × 67,141.18
  4. Step 4: Simplify right side
    123,729.94x = 11,464,383,341.47
  5. Step 5: Solve for x
    x = 11,464,383,341.47/123,729.94
  6. Step 6: Final answer
    x = 92,656.50

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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.