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Finding the Fourth Proportional to 121,644, 182,564.28 and 51,572.52

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Solution

The fourth proportional to 121,644, 182,564.28 and 51,572.52 is: 77,400.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,644 : 182,564.28 = 51,572.52 : x
  2. Step 2: Convert to fraction form
    121,644/182,564.28 = 51,572.52/x
  3. Step 3: Cross multiply
    121,644x = 182,564.28 × 51,572.52
  4. Step 4: Simplify right side
    121,644x = 9,415,299,981.59
  5. Step 5: Solve for x
    x = 9,415,299,981.59/121,644
  6. Step 6: Final answer
    x = 77,400.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.