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Finding the Fourth Proportional to 158,671, 218,970.12 and 89,754.88

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Solution

The fourth proportional to 158,671, 218,970.12 and 89,754.88 is: 123,864.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,671 : 218,970.12 = 89,754.88 : x
  2. Step 2: Convert to fraction form
    158,671/218,970.12 = 89,754.88/x
  3. Step 3: Cross multiply
    158,671x = 218,970.12 × 89,754.88
  4. Step 4: Simplify right side
    158,671x = 19,653,636,844.19
  5. Step 5: Solve for x
    x = 19,653,636,844.19/158,671
  6. Step 6: Final answer
    x = 123,864.08

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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.