Home / 142,857.07-214,321.28-100,819.19

Finding the Fourth Proportional to 142,857.07, 214,321.28 and 100,819.19

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Solution

The fourth proportional to 142,857.07, 214,321.28 and 100,819.19 is: 151,253.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,857.07 : 214,321.28 = 100,819.19 : x
  2. Step 2: Convert to fraction form
    142,857.07/214,321.28 = 100,819.19/x
  3. Step 3: Cross multiply
    142,857.07x = 214,321.28 × 100,819.19
  4. Step 4: Simplify right side
    142,857.07x = 21,607,697,881.07
  5. Step 5: Solve for x
    x = 21,607,697,881.07/142,857.07
  6. Step 6: Final answer
    x = 151,253.96

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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.