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Finding the Fourth Proportional to 153,400.93, 211,642.54 and 89,693.62

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Solution

The fourth proportional to 153,400.93, 211,642.54 and 89,693.62 is: 123,747.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,400.93 : 211,642.54 = 89,693.62 : x
  2. Step 2: Convert to fraction form
    153,400.93/211,642.54 = 89,693.62/x
  3. Step 3: Cross multiply
    153,400.93x = 211,642.54 × 89,693.62
  4. Step 4: Simplify right side
    153,400.93x = 18,982,985,558.59
  5. Step 5: Solve for x
    x = 18,982,985,558.59/153,400.93
  6. Step 6: Final answer
    x = 123,747.53

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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.