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Finding the Fourth Proportional to 115,006.98, 158,726.59 and 69,069.72

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Solution

The fourth proportional to 115,006.98, 158,726.59 and 69,069.72 is: 95,326.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,006.98 : 158,726.59 = 69,069.72 : x
  2. Step 2: Convert to fraction form
    115,006.98/158,726.59 = 69,069.72/x
  3. Step 3: Cross multiply
    115,006.98x = 158,726.59 × 69,069.72
  4. Step 4: Simplify right side
    115,006.98x = 10,963,201,550.41
  5. Step 5: Solve for x
    x = 10,963,201,550.41/115,006.98
  6. Step 6: Final answer
    x = 95,326.40

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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.