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Finding the Fourth Proportional to 158,637, 218,919.06 and 91,569

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Solution

The fourth proportional to 158,637, 218,919.06 and 91,569 is: 126,365.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,637 : 218,919.06 = 91,569 : x
  2. Step 2: Convert to fraction form
    158,637/218,919.06 = 91,569/x
  3. Step 3: Cross multiply
    158,637x = 218,919.06 × 91,569
  4. Step 4: Simplify right side
    158,637x = 20,046,199,405.14
  5. Step 5: Solve for x
    x = 20,046,199,405.14/158,637
  6. Step 6: Final answer
    x = 126,365.22

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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.