Home / 145,238.17-218,043.83-111,979.36

Finding the Fourth Proportional to 145,238.17, 218,043.83 and 111,979.36

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Solution

The fourth proportional to 145,238.17, 218,043.83 and 111,979.36 is: 168,112.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,238.17 : 218,043.83 = 111,979.36 : x
  2. Step 2: Convert to fraction form
    145,238.17/218,043.83 = 111,979.36/x
  3. Step 3: Cross multiply
    145,238.17x = 218,043.83 × 111,979.36
  4. Step 4: Simplify right side
    145,238.17x = 24,416,408,535.35
  5. Step 5: Solve for x
    x = 24,416,408,535.35/145,238.17
  6. Step 6: Final answer
    x = 168,112.89

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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.