Home / 116,719.76-161,044.70-77,881.21

Finding the Fourth Proportional to 116,719.76, 161,044.70 and 77,881.21

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Solution

The fourth proportional to 116,719.76, 161,044.70 and 77,881.21 is: 107,457.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,719.76 : 161,044.70 = 77,881.21 : x
  2. Step 2: Convert to fraction form
    116,719.76/161,044.70 = 77,881.21/x
  3. Step 3: Cross multiply
    116,719.76x = 161,044.70 × 77,881.21
  4. Step 4: Simplify right side
    116,719.76x = 12,542,355,408.30
  5. Step 5: Solve for x
    x = 12,542,355,408.30/116,719.76
  6. Step 6: Final answer
    x = 107,457.00

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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.