Home / 98,717.32-147,921-67,142.44

Finding the Fourth Proportional to 98,717.32, 147,921 and 67,142.44

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Solution

The fourth proportional to 98,717.32, 147,921 and 67,142.44 is: 100,608.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,717.32 : 147,921 = 67,142.44 : x
  2. Step 2: Convert to fraction form
    98,717.32/147,921 = 67,142.44/x
  3. Step 3: Cross multiply
    98,717.32x = 147,921 × 67,142.44
  4. Step 4: Simplify right side
    98,717.32x = 9,931,776,867.24
  5. Step 5: Solve for x
    x = 9,931,776,867.24/98,717.32
  6. Step 6: Final answer
    x = 100,608.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.