Home / 142,784.60-214,031.10-83,589.80

Finding the Fourth Proportional to 142,784.60, 214,031.10 and 83,589.80

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Solution

The fourth proportional to 142,784.60, 214,031.10 and 83,589.80 is: 125,299.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,784.60 : 214,031.10 = 83,589.80 : x
  2. Step 2: Convert to fraction form
    142,784.60/214,031.10 = 83,589.80/x
  3. Step 3: Cross multiply
    142,784.60x = 214,031.10 × 83,589.80
  4. Step 4: Simplify right side
    142,784.60x = 17,890,816,842.78
  5. Step 5: Solve for x
    x = 17,890,816,842.78/142,784.60
  6. Step 6: Final answer
    x = 125,299.34

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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.