Home / 126,509.61-189,795.54-89,142.63

Finding the Fourth Proportional to 126,509.61, 189,795.54 and 89,142.63

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Solution

The fourth proportional to 126,509.61, 189,795.54 and 89,142.63 is: 133,735.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,509.61 : 189,795.54 = 89,142.63 : x
  2. Step 2: Convert to fraction form
    126,509.61/189,795.54 = 89,142.63/x
  3. Step 3: Cross multiply
    126,509.61x = 189,795.54 × 89,142.63
  4. Step 4: Simplify right side
    126,509.61x = 16,918,873,597.87
  5. Step 5: Solve for x
    x = 16,918,873,597.87/126,509.61
  6. Step 6: Final answer
    x = 133,735.88

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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.