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Finding the Fourth Proportional to 145,689.92, 218,554.01 and 50,921.74

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Solution

The fourth proportional to 145,689.92, 218,554.01 and 50,921.74 is: 76,389.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,689.92 : 218,554.01 = 50,921.74 : x
  2. Step 2: Convert to fraction form
    145,689.92/218,554.01 = 50,921.74/x
  3. Step 3: Cross multiply
    145,689.92x = 218,554.01 × 50,921.74
  4. Step 4: Simplify right side
    145,689.92x = 11,129,150,473.18
  5. Step 5: Solve for x
    x = 11,129,150,473.18/145,689.92
  6. Step 6: Final answer
    x = 76,389.30

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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.