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Finding the Fourth Proportional to 145,304.96, 217,825.41 and 129,558.56

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Solution

The fourth proportional to 145,304.96, 217,825.41 and 129,558.56 is: 194,220.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,304.96 : 217,825.41 = 129,558.56 : x
  2. Step 2: Convert to fraction form
    145,304.96/217,825.41 = 129,558.56/x
  3. Step 3: Cross multiply
    145,304.96x = 217,825.41 × 129,558.56
  4. Step 4: Simplify right side
    145,304.96x = 28,221,146,451.01
  5. Step 5: Solve for x
    x = 28,221,146,451.01/145,304.96
  6. Step 6: Final answer
    x = 194,220.12

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1.5x scale

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.