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Finding the Fourth Proportional to 122,484.90, 183,633.90 and 55,878.45

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Solution

The fourth proportional to 122,484.90, 183,633.90 and 55,878.45 is: 83,775.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,484.90 : 183,633.90 = 55,878.45 : x
  2. Step 2: Convert to fraction form
    122,484.90/183,633.90 = 55,878.45/x
  3. Step 3: Cross multiply
    122,484.90x = 183,633.90 × 55,878.45
  4. Step 4: Simplify right side
    122,484.90x = 10,261,176,781.29
  5. Step 5: Solve for x
    x = 10,261,176,781.29/122,484.90
  6. Step 6: Final answer
    x = 83,775.03

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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.