Home / 138,463.46-191,088.58-77,216.56

Finding the Fourth Proportional to 138,463.46, 191,088.58 and 77,216.56

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Solution

The fourth proportional to 138,463.46, 191,088.58 and 77,216.56 is: 106,563.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,463.46 : 191,088.58 = 77,216.56 : x
  2. Step 2: Convert to fraction form
    138,463.46/191,088.58 = 77,216.56/x
  3. Step 3: Cross multiply
    138,463.46x = 191,088.58 × 77,216.56
  4. Step 4: Simplify right side
    138,463.46x = 14,755,202,802.88
  5. Step 5: Solve for x
    x = 14,755,202,802.88/138,463.46
  6. Step 6: Final answer
    x = 106,563.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.