Home / 126,521.39-189,688.34-76,589.67

Finding the Fourth Proportional to 126,521.39, 189,688.34 and 76,589.67

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Solution

The fourth proportional to 126,521.39, 189,688.34 and 76,589.67 is: 114,827.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,521.39 : 189,688.34 = 76,589.67 : x
  2. Step 2: Convert to fraction form
    126,521.39/189,688.34 = 76,589.67/x
  3. Step 3: Cross multiply
    126,521.39x = 189,688.34 × 76,589.67
  4. Step 4: Simplify right side
    126,521.39x = 14,528,167,363.45
  5. Step 5: Solve for x
    x = 14,528,167,363.45/126,521.39
  6. Step 6: Final answer
    x = 114,827.76

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1.5x scale

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.