Home / 143,972.51-198,686.39-80,308.94

Finding the Fourth Proportional to 143,972.51, 198,686.39 and 80,308.94

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Solution

The fourth proportional to 143,972.51, 198,686.39 and 80,308.94 is: 110,828.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,972.51 : 198,686.39 = 80,308.94 : x
  2. Step 2: Convert to fraction form
    143,972.51/198,686.39 = 80,308.94/x
  3. Step 3: Cross multiply
    143,972.51x = 198,686.39 × 80,308.94
  4. Step 4: Simplify right side
    143,972.51x = 15,956,291,978.35
  5. Step 5: Solve for x
    x = 15,956,291,978.35/143,972.51
  6. Step 6: Final answer
    x = 110,828.74

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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.