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Finding the Fourth Proportional to 145,363.88, 218,046.74 and 45,516.40

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Solution

The fourth proportional to 145,363.88, 218,046.74 and 45,516.40 is: 68,274.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,363.88 : 218,046.74 = 45,516.40 : x
  2. Step 2: Convert to fraction form
    145,363.88/218,046.74 = 45,516.40/x
  3. Step 3: Cross multiply
    145,363.88x = 218,046.74 × 45,516.40
  4. Step 4: Simplify right side
    145,363.88x = 9,924,701,863.84
  5. Step 5: Solve for x
    x = 9,924,701,863.84/145,363.88
  6. Step 6: Final answer
    x = 68,274.88

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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.