Home / 143,014.20-214,521.30-90,655.80

Finding the Fourth Proportional to 143,014.20, 214,521.30 and 90,655.80

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Solution

The fourth proportional to 143,014.20, 214,521.30 and 90,655.80 is: 135,983.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,014.20 : 214,521.30 = 90,655.80 : x
  2. Step 2: Convert to fraction form
    143,014.20/214,521.30 = 90,655.80/x
  3. Step 3: Cross multiply
    143,014.20x = 214,521.30 × 90,655.80
  4. Step 4: Simplify right side
    143,014.20x = 19,447,600,068.54
  5. Step 5: Solve for x
    x = 19,447,600,068.54/143,014.20
  6. Step 6: Final answer
    x = 135,983.70

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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.