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Finding the Fourth Proportional to 151,881.84, 209,587.68 and 91,472.04

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Solution

The fourth proportional to 151,881.84, 209,587.68 and 91,472.04 is: 126,225.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,881.84 : 209,587.68 = 91,472.04 : x
  2. Step 2: Convert to fraction form
    151,881.84/209,587.68 = 91,472.04/x
  3. Step 3: Cross multiply
    151,881.84x = 209,587.68 × 91,472.04
  4. Step 4: Simplify right side
    151,881.84x = 19,171,412,648.47
  5. Step 5: Solve for x
    x = 19,171,412,648.47/151,881.84
  6. Step 6: Final answer
    x = 126,225.84

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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.