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Finding the Fourth Proportional to 107,220, 147,963.72 and 62,516.64

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Solution

The fourth proportional to 107,220, 147,963.72 and 62,516.64 is: 86,273.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,220 : 147,963.72 = 62,516.64 : x
  2. Step 2: Convert to fraction form
    107,220/147,963.72 = 62,516.64/x
  3. Step 3: Cross multiply
    107,220x = 147,963.72 × 62,516.64
  4. Step 4: Simplify right side
    107,220x = 9,250,194,616.30
  5. Step 5: Solve for x
    x = 9,250,194,616.30/107,220
  6. Step 6: Final answer
    x = 86,273.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.