Home / 126,521.17-189,688.01-76,589.48

Finding the Fourth Proportional to 126,521.17, 189,688.01 and 76,589.48

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Solution

The fourth proportional to 126,521.17, 189,688.01 and 76,589.48 is: 114,827.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,521.17 : 189,688.01 = 76,589.48 : x
  2. Step 2: Convert to fraction form
    126,521.17/189,688.01 = 76,589.48/x
  3. Step 3: Cross multiply
    126,521.17x = 189,688.01 × 76,589.48
  4. Step 4: Simplify right side
    126,521.17x = 14,528,106,139.41
  5. Step 5: Solve for x
    x = 14,528,106,139.41/126,521.17
  6. Step 6: Final answer
    x = 114,827.47

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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.