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Finding the Fourth Proportional to 158,406.94, 218,422.47 and 100,969.66

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Solution

The fourth proportional to 158,406.94, 218,422.47 and 100,969.66 is: 139,223.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,406.94 : 218,422.47 = 100,969.66 : x
  2. Step 2: Convert to fraction form
    158,406.94/218,422.47 = 100,969.66/x
  3. Step 3: Cross multiply
    158,406.94x = 218,422.47 × 100,969.66
  4. Step 4: Simplify right side
    158,406.94x = 22,054,042,532.26
  5. Step 5: Solve for x
    x = 22,054,042,532.26/158,406.94
  6. Step 6: Final answer
    x = 139,223.97

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1.5x scale

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.