Home / 90,822.70-136,234.05-81,606.70

Finding the Fourth Proportional to 90,822.70, 136,234.05 and 81,606.70

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Solution

The fourth proportional to 90,822.70, 136,234.05 and 81,606.70 is: 122,410.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,822.70 : 136,234.05 = 81,606.70 : x
  2. Step 2: Convert to fraction form
    90,822.70/136,234.05 = 81,606.70/x
  3. Step 3: Cross multiply
    90,822.70x = 136,234.05 × 81,606.70
  4. Step 4: Simplify right side
    90,822.70x = 11,117,611,248.14
  5. Step 5: Solve for x
    x = 11,117,611,248.14/90,822.70
  6. Step 6: Final answer
    x = 122,410.05

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1.5x scale

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.