Home / 99,423.37-149,135.06-81,856.30

Finding the Fourth Proportional to 99,423.37, 149,135.06 and 81,856.30

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Solution

The fourth proportional to 99,423.37, 149,135.06 and 81,856.30 is: 122,784.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,423.37 : 149,135.06 = 81,856.30 : x
  2. Step 2: Convert to fraction form
    99,423.37/149,135.06 = 81,856.30/x
  3. Step 3: Cross multiply
    99,423.37x = 149,135.06 × 81,856.30
  4. Step 4: Simplify right side
    99,423.37x = 12,207,643,788.76
  5. Step 5: Solve for x
    x = 12,207,643,788.76/99,423.37
  6. Step 6: Final answer
    x = 122,784.44

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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.