Home / 291,836.70-437,701.05-81,431.10

Finding the Fourth Proportional to 291,836.70, 437,701.05 and 81,431.10

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Solution

The fourth proportional to 291,836.70, 437,701.05 and 81,431.10 is: 122,131.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,836.70 : 437,701.05 = 81,431.10 : x
  2. Step 2: Convert to fraction form
    291,836.70/437,701.05 = 81,431.10/x
  3. Step 3: Cross multiply
    291,836.70x = 437,701.05 × 81,431.10
  4. Step 4: Simplify right side
    291,836.70x = 35,642,477,972.66
  5. Step 5: Solve for x
    x = 35,642,477,972.66/291,836.70
  6. Step 6: Final answer
    x = 122,131.58

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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.