Home / 129,412.11-194,150.40-102,858.30

Finding the Fourth Proportional to 129,412.11, 194,150.40 and 102,858.30

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Solution

The fourth proportional to 129,412.11, 194,150.40 and 102,858.30 is: 154,313.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,412.11 : 194,150.40 = 102,858.30 : x
  2. Step 2: Convert to fraction form
    129,412.11/194,150.40 = 102,858.30/x
  3. Step 3: Cross multiply
    129,412.11x = 194,150.40 × 102,858.30
  4. Step 4: Simplify right side
    129,412.11x = 19,969,980,088.32
  5. Step 5: Solve for x
    x = 19,969,980,088.32/129,412.11
  6. Step 6: Final answer
    x = 154,313.07

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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.