Home / 143,218.75-214,754.28-98,308.72

Finding the Fourth Proportional to 143,218.75, 214,754.28 and 98,308.72

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Solution

The fourth proportional to 143,218.75, 214,754.28 and 98,308.72 is: 147,412.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,218.75 : 214,754.28 = 98,308.72 : x
  2. Step 2: Convert to fraction form
    143,218.75/214,754.28 = 98,308.72/x
  3. Step 3: Cross multiply
    143,218.75x = 214,754.28 × 98,308.72
  4. Step 4: Simplify right side
    143,218.75x = 21,112,218,381.32
  5. Step 5: Solve for x
    x = 21,112,218,381.32/143,218.75
  6. Step 6: Final answer
    x = 147,412.39

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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.