Home / 142,972.60-214,313.10-83,777.80

Finding the Fourth Proportional to 142,972.60, 214,313.10 and 83,777.80

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Solution

The fourth proportional to 142,972.60, 214,313.10 and 83,777.80 is: 125,581.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,972.60 : 214,313.10 = 83,777.80 : x
  2. Step 2: Convert to fraction form
    142,972.60/214,313.10 = 83,777.80/x
  3. Step 3: Cross multiply
    142,972.60x = 214,313.10 × 83,777.80
  4. Step 4: Simplify right side
    142,972.60x = 17,954,680,029.18
  5. Step 5: Solve for x
    x = 17,954,680,029.18/142,972.60
  6. Step 6: Final answer
    x = 125,581.27

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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.