Home / 126,699.20-189,848.76-102,890.90

Finding the Fourth Proportional to 126,699.20, 189,848.76 and 102,890.90

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Solution

The fourth proportional to 126,699.20, 189,848.76 and 102,890.90 is: 154,173.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,699.20 : 189,848.76 = 102,890.90 : x
  2. Step 2: Convert to fraction form
    126,699.20/189,848.76 = 102,890.90/x
  3. Step 3: Cross multiply
    126,699.20x = 189,848.76 × 102,890.90
  4. Step 4: Simplify right side
    126,699.20x = 19,533,709,780.28
  5. Step 5: Solve for x
    x = 19,533,709,780.28/126,699.20
  6. Step 6: Final answer
    x = 154,173.90

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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.