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Finding the Fourth Proportional to 92,842.32, 139,137.64 and 67,764.72

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Solution

The fourth proportional to 92,842.32, 139,137.64 and 67,764.72 is: 101,555.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,842.32 : 139,137.64 = 67,764.72 : x
  2. Step 2: Convert to fraction form
    92,842.32/139,137.64 = 67,764.72/x
  3. Step 3: Cross multiply
    92,842.32x = 139,137.64 × 67,764.72
  4. Step 4: Simplify right side
    92,842.32x = 9,428,623,216.06
  5. Step 5: Solve for x
    x = 9,428,623,216.06/92,842.32
  6. Step 6: Final answer
    x = 101,555.23

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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.