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Finding the Fourth Proportional to 158,643.73, 218,804.62 and 98,247.91

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Solution

The fourth proportional to 158,643.73, 218,804.62 and 98,247.91 is: 135,505.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,643.73 : 218,804.62 = 98,247.91 : x
  2. Step 2: Convert to fraction form
    158,643.73/218,804.62 = 98,247.91/x
  3. Step 3: Cross multiply
    158,643.73x = 218,804.62 × 98,247.91
  4. Step 4: Simplify right side
    158,643.73x = 21,497,096,613.34
  5. Step 5: Solve for x
    x = 21,497,096,613.34/158,643.73
  6. Step 6: Final answer
    x = 135,505.49

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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.