Home / 143,148.11-214,720.79-87,003.71

Finding the Fourth Proportional to 143,148.11, 214,720.79 and 87,003.71

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Solution

The fourth proportional to 143,148.11, 214,720.79 and 87,003.71 is: 130,504.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,148.11 : 214,720.79 = 87,003.71 : x
  2. Step 2: Convert to fraction form
    143,148.11/214,720.79 = 87,003.71/x
  3. Step 3: Cross multiply
    143,148.11x = 214,720.79 × 87,003.71
  4. Step 4: Simplify right side
    143,148.11x = 18,681,506,337.91
  5. Step 5: Solve for x
    x = 18,681,506,337.91/143,148.11
  6. Step 6: Final answer
    x = 130,504.74

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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.