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Finding the Fourth Proportional to 143,357.33, 215,041.47 and 73,154.63

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Solution

The fourth proportional to 143,357.33, 215,041.47 and 73,154.63 is: 109,734.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,357.33 : 215,041.47 = 73,154.63 : x
  2. Step 2: Convert to fraction form
    143,357.33/215,041.47 = 73,154.63/x
  3. Step 3: Cross multiply
    143,357.33x = 215,041.47 × 73,154.63
  4. Step 4: Simplify right side
    143,357.33x = 15,731,279,435.78
  5. Step 5: Solve for x
    x = 15,731,279,435.78/143,357.33
  6. Step 6: Final answer
    x = 109,734.74

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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.