Home / 123,742.78-170,764.95-67,154.02

Finding the Fourth Proportional to 123,742.78, 170,764.95 and 67,154.02

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Solution

The fourth proportional to 123,742.78, 170,764.95 and 67,154.02 is: 92,672.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,742.78 : 170,764.95 = 67,154.02 : x
  2. Step 2: Convert to fraction form
    123,742.78/170,764.95 = 67,154.02/x
  3. Step 3: Cross multiply
    123,742.78x = 170,764.95 × 67,154.02
  4. Step 4: Simplify right side
    123,742.78x = 11,467,552,867.60
  5. Step 5: Solve for x
    x = 11,467,552,867.60/123,742.78
  6. Step 6: Final answer
    x = 92,672.50

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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.