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Finding the Fourth Proportional to 107,744, 148,686.72 and 63,040.64

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Solution

The fourth proportional to 107,744, 148,686.72 and 63,040.64 is: 86,996.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,744 : 148,686.72 = 63,040.64 : x
  2. Step 2: Convert to fraction form
    107,744/148,686.72 = 63,040.64/x
  3. Step 3: Cross multiply
    107,744x = 148,686.72 × 63,040.64
  4. Step 4: Simplify right side
    107,744x = 9,373,305,988.30
  5. Step 5: Solve for x
    x = 9,373,305,988.30/107,744
  6. Step 6: Final answer
    x = 86,996.08

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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.