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Finding the Fourth Proportional to 158,184, 218,332.80 and 91,154.88

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Solution

The fourth proportional to 158,184, 218,332.80 and 91,154.88 is: 125,816.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,184 : 218,332.80 = 91,154.88 : x
  2. Step 2: Convert to fraction form
    158,184/218,332.80 = 91,154.88/x
  3. Step 3: Cross multiply
    158,184x = 218,332.80 × 91,154.88
  4. Step 4: Simplify right side
    158,184x = 19,902,100,184.06
  5. Step 5: Solve for x
    x = 19,902,100,184.06/158,184
  6. Step 6: Final answer
    x = 125,816.14

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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.