Home / 126,260.93-189,436.95-78,173.58

Finding the Fourth Proportional to 126,260.93, 189,436.95 and 78,173.58

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Solution

The fourth proportional to 126,260.93, 189,436.95 and 78,173.58 is: 117,288.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,260.93 : 189,436.95 = 78,173.58 : x
  2. Step 2: Convert to fraction form
    126,260.93/189,436.95 = 78,173.58/x
  3. Step 3: Cross multiply
    126,260.93x = 189,436.95 × 78,173.58
  4. Step 4: Simplify right side
    126,260.93x = 14,808,964,565.78
  5. Step 5: Solve for x
    x = 14,808,964,565.78/126,260.93
  6. Step 6: Final answer
    x = 117,288.58

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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.