Home / 131,123.70-180,945.45-77,426.01

Finding the Fourth Proportional to 131,123.70, 180,945.45 and 77,426.01

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Solution

The fourth proportional to 131,123.70, 180,945.45 and 77,426.01 is: 106,844.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,123.70 : 180,945.45 = 77,426.01 : x
  2. Step 2: Convert to fraction form
    131,123.70/180,945.45 = 77,426.01/x
  3. Step 3: Cross multiply
    131,123.70x = 180,945.45 × 77,426.01
  4. Step 4: Simplify right side
    131,123.70x = 14,009,884,221.15
  5. Step 5: Solve for x
    x = 14,009,884,221.15/131,123.70
  6. Step 6: Final answer
    x = 106,844.79

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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.