Home / 143,419.10-214,869.45-126,830.30

Finding the Fourth Proportional to 143,419.10, 214,869.45 and 126,830.30

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Solution

The fourth proportional to 143,419.10, 214,869.45 and 126,830.30 is: 190,016.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,419.10 : 214,869.45 = 126,830.30 : x
  2. Step 2: Convert to fraction form
    143,419.10/214,869.45 = 126,830.30/x
  3. Step 3: Cross multiply
    143,419.10x = 214,869.45 × 126,830.30
  4. Step 4: Simplify right side
    143,419.10x = 27,251,956,804.34
  5. Step 5: Solve for x
    x = 27,251,956,804.34/143,419.10
  6. Step 6: Final answer
    x = 190,016.23

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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.