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Finding the Fourth Proportional to 121,865.16, 182,779.22 and 41,915.28

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Solution

The fourth proportional to 121,865.16, 182,779.22 and 41,915.28 is: 62,866.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,865.16 : 182,779.22 = 41,915.28 : x
  2. Step 2: Convert to fraction form
    121,865.16/182,779.22 = 41,915.28/x
  3. Step 3: Cross multiply
    121,865.16x = 182,779.22 × 41,915.28
  4. Step 4: Simplify right side
    121,865.16x = 7,661,242,184.48
  5. Step 5: Solve for x
    x = 7,661,242,184.48/121,865.16
  6. Step 6: Final answer
    x = 62,866.55

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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.