Home / 130,123.11-179,571.30-76,408.77

Finding the Fourth Proportional to 130,123.11, 179,571.30 and 76,408.77

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Solution

The fourth proportional to 130,123.11, 179,571.30 and 76,408.77 is: 105,444.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,123.11 : 179,571.30 = 76,408.77 : x
  2. Step 2: Convert to fraction form
    130,123.11/179,571.30 = 76,408.77/x
  3. Step 3: Cross multiply
    130,123.11x = 179,571.30 × 76,408.77
  4. Step 4: Simplify right side
    130,123.11x = 13,720,822,160.30
  5. Step 5: Solve for x
    x = 13,720,822,160.30/130,123.11
  6. Step 6: Final answer
    x = 105,444.93

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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.