Home / 142,820.20-214,260.26-42,987.70

Finding the Fourth Proportional to 142,820.20, 214,260.26 and 42,987.70

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Solution

The fourth proportional to 142,820.20, 214,260.26 and 42,987.70 is: 64,490.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,820.20 : 214,260.26 = 42,987.70 : x
  2. Step 2: Convert to fraction form
    142,820.20/214,260.26 = 42,987.70/x
  3. Step 3: Cross multiply
    142,820.20x = 214,260.26 × 42,987.70
  4. Step 4: Simplify right side
    142,820.20x = 9,210,555,778.80
  5. Step 5: Solve for x
    x = 9,210,555,778.80/142,820.20
  6. Step 6: Final answer
    x = 64,490.57

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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.