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Finding the Fourth Proportional to 158,288.90, 218,395.37 and 101,733.08

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Solution

The fourth proportional to 158,288.90, 218,395.37 and 101,733.08 is: 140,363.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,288.90 : 218,395.37 = 101,733.08 : x
  2. Step 2: Convert to fraction form
    158,288.90/218,395.37 = 101,733.08/x
  3. Step 3: Cross multiply
    158,288.90x = 218,395.37 × 101,733.08
  4. Step 4: Simplify right side
    158,288.90x = 22,218,032,810.20
  5. Step 5: Solve for x
    x = 22,218,032,810.20/158,288.90
  6. Step 6: Final answer
    x = 140,363.81

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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.