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Finding the Fourth Proportional to 153,179.58, 211,301.54 and 91,909.92

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Solution

The fourth proportional to 153,179.58, 211,301.54 and 91,909.92 is: 126,783.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,179.58 : 211,301.54 = 91,909.92 : x
  2. Step 2: Convert to fraction form
    153,179.58/211,301.54 = 91,909.92/x
  3. Step 3: Cross multiply
    153,179.58x = 211,301.54 × 91,909.92
  4. Step 4: Simplify right side
    153,179.58x = 19,420,707,804.43
  5. Step 5: Solve for x
    x = 19,420,707,804.43/153,179.58
  6. Step 6: Final answer
    x = 126,783.92

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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.