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Finding the Fourth Proportional to 92,865.60, 139,298.40 and 88,588.80

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Solution

The fourth proportional to 92,865.60, 139,298.40 and 88,588.80 is: 132,883.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,865.60 : 139,298.40 = 88,588.80 : x
  2. Step 2: Convert to fraction form
    92,865.60/139,298.40 = 88,588.80/x
  3. Step 3: Cross multiply
    92,865.60x = 139,298.40 × 88,588.80
  4. Step 4: Simplify right side
    92,865.60x = 12,340,278,097.92
  5. Step 5: Solve for x
    x = 12,340,278,097.92/92,865.60
  6. Step 6: Final answer
    x = 132,883.20

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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.