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Finding the Fourth Proportional to 158,370.63, 218,468.61 and 97,921.95

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Solution

The fourth proportional to 158,370.63, 218,468.61 and 97,921.95 is: 135,081.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,370.63 : 218,468.61 = 97,921.95 : x
  2. Step 2: Convert to fraction form
    158,370.63/218,468.61 = 97,921.95/x
  3. Step 3: Cross multiply
    158,370.63x = 218,468.61 × 97,921.95
  4. Step 4: Simplify right side
    158,370.63x = 21,392,872,304.99
  5. Step 5: Solve for x
    x = 21,392,872,304.99/158,370.63
  6. Step 6: Final answer
    x = 135,081.06

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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.