Home / 89,811.30-134,486.55-85,664.10

Finding the Fourth Proportional to 89,811.30, 134,486.55 and 85,664.10

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Solution

The fourth proportional to 89,811.30, 134,486.55 and 85,664.10 is: 128,276.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,811.30 : 134,486.55 = 85,664.10 : x
  2. Step 2: Convert to fraction form
    89,811.30/134,486.55 = 85,664.10/x
  3. Step 3: Cross multiply
    89,811.30x = 134,486.55 × 85,664.10
  4. Step 4: Simplify right side
    89,811.30x = 11,520,669,267.86
  5. Step 5: Solve for x
    x = 11,520,669,267.86/89,811.30
  6. Step 6: Final answer
    x = 128,276.39

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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.