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Finding the Fourth Proportional to 121,167.40, 181,779.90 and 51,010.60

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Solution

The fourth proportional to 121,167.40, 181,779.90 and 51,010.60 is: 76,528.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,167.40 : 181,779.90 = 51,010.60 : x
  2. Step 2: Convert to fraction form
    121,167.40/181,779.90 = 51,010.60/x
  3. Step 3: Cross multiply
    121,167.40x = 181,779.90 × 51,010.60
  4. Step 4: Simplify right side
    121,167.40x = 9,272,701,766.94
  5. Step 5: Solve for x
    x = 9,272,701,766.94/121,167.40
  6. Step 6: Final answer
    x = 76,528.02

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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.