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Finding the Fourth Proportional to 121,010.86, 181,460.76 and 71,114.44

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Solution

The fourth proportional to 121,010.86, 181,460.76 and 71,114.44 is: 106,639.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,010.86 : 181,460.76 = 71,114.44 : x
  2. Step 2: Convert to fraction form
    121,010.86/181,460.76 = 71,114.44/x
  3. Step 3: Cross multiply
    121,010.86x = 181,460.76 × 71,114.44
  4. Step 4: Simplify right side
    121,010.86x = 12,904,480,329.37
  5. Step 5: Solve for x
    x = 12,904,480,329.37/121,010.86
  6. Step 6: Final answer
    x = 106,639.03

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1.5x scale

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.