Home / 153,306-211,530.42-89,631.48

Finding the Fourth Proportional to 153,306, 211,530.42 and 89,631.48

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Solution

The fourth proportional to 153,306, 211,530.42 and 89,631.48 is: 123,672.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,306 : 211,530.42 = 89,631.48 : x
  2. Step 2: Convert to fraction form
    153,306/211,530.42 = 89,631.48/x
  3. Step 3: Cross multiply
    153,306x = 211,530.42 × 89,631.48
  4. Step 4: Simplify right side
    153,306x = 18,959,784,609.62
  5. Step 5: Solve for x
    x = 18,959,784,609.62/153,306
  6. Step 6: Final answer
    x = 123,672.82

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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.