Home / 126,005.70-189,081.45-47,127.90

Finding the Fourth Proportional to 126,005.70, 189,081.45 and 47,127.90

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Solution

The fourth proportional to 126,005.70, 189,081.45 and 47,127.90 is: 70,719.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,005.70 : 189,081.45 = 47,127.90 : x
  2. Step 2: Convert to fraction form
    126,005.70/189,081.45 = 47,127.90/x
  3. Step 3: Cross multiply
    126,005.70x = 189,081.45 × 47,127.90
  4. Step 4: Simplify right side
    126,005.70x = 8,911,011,667.46
  5. Step 5: Solve for x
    x = 8,911,011,667.46/126,005.70
  6. Step 6: Final answer
    x = 70,719.12

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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.