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Finding the Fourth Proportional to 158,129.64, 218,228.58 and 91,083.24

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Solution

The fourth proportional to 158,129.64, 218,228.58 and 91,083.24 is: 125,700.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,129.64 : 218,228.58 = 91,083.24 : x
  2. Step 2: Convert to fraction form
    158,129.64/218,228.58 = 91,083.24/x
  3. Step 3: Cross multiply
    158,129.64x = 218,228.58 × 91,083.24
  4. Step 4: Simplify right side
    158,129.64x = 19,876,966,127.00
  5. Step 5: Solve for x
    x = 19,876,966,127.00/158,129.64
  6. Step 6: Final answer
    x = 125,700.45

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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.