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Finding the Fourth Proportional to 158,479.64, 218,700.06 and 85,881.08

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Solution

The fourth proportional to 158,479.64, 218,700.06 and 85,881.08 is: 118,514.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,479.64 : 218,700.06 = 85,881.08 : x
  2. Step 2: Convert to fraction form
    158,479.64/218,700.06 = 85,881.08/x
  3. Step 3: Cross multiply
    158,479.64x = 218,700.06 × 85,881.08
  4. Step 4: Simplify right side
    158,479.64x = 18,782,197,348.86
  5. Step 5: Solve for x
    x = 18,782,197,348.86/158,479.64
  6. Step 6: Final answer
    x = 118,514.89

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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.