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Finding the Fourth Proportional to 123,752.88, 170,783.64 and 70,040.16

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Solution

The fourth proportional to 123,752.88, 170,783.64 and 70,040.16 is: 96,658.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,752.88 : 170,783.64 = 70,040.16 : x
  2. Step 2: Convert to fraction form
    123,752.88/170,783.64 = 70,040.16/x
  3. Step 3: Cross multiply
    123,752.88x = 170,783.64 × 70,040.16
  4. Step 4: Simplify right side
    123,752.88x = 11,961,713,470.98
  5. Step 5: Solve for x
    x = 11,961,713,470.98/123,752.88
  6. Step 6: Final answer
    x = 96,658.06

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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.