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Finding the Fourth Proportional to 151,878.33, 209,582.91 and 91,468.53

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Solution

The fourth proportional to 151,878.33, 209,582.91 and 91,468.53 is: 126,221.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,878.33 : 209,582.91 = 91,468.53 : x
  2. Step 2: Convert to fraction form
    151,878.33/209,582.91 = 91,468.53/x
  3. Step 3: Cross multiply
    151,878.33x = 209,582.91 × 91,468.53
  4. Step 4: Simplify right side
    151,878.33x = 19,170,240,690.82
  5. Step 5: Solve for x
    x = 19,170,240,690.82/151,878.33
  6. Step 6: Final answer
    x = 126,221.04

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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.