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Finding the Fourth Proportional to 158,297.36, 218,450.71 and 85,701.02

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Solution

The fourth proportional to 158,297.36, 218,450.71 and 85,701.02 is: 118,267.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,297.36 : 218,450.71 = 85,701.02 : x
  2. Step 2: Convert to fraction form
    158,297.36/218,450.71 = 85,701.02/x
  3. Step 3: Cross multiply
    158,297.36x = 218,450.71 × 85,701.02
  4. Step 4: Simplify right side
    158,297.36x = 18,721,449,151.42
  5. Step 5: Solve for x
    x = 18,721,449,151.42/158,297.36
  6. Step 6: Final answer
    x = 118,267.60

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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.