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Finding the Fourth Proportional to 181,980.75, 251,061.83 and 121,590.84

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Solution

The fourth proportional to 181,980.75, 251,061.83 and 121,590.84 is: 167,747.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,980.75 : 251,061.83 = 121,590.84 : x
  2. Step 2: Convert to fraction form
    181,980.75/251,061.83 = 121,590.84/x
  3. Step 3: Cross multiply
    181,980.75x = 251,061.83 × 121,590.84
  4. Step 4: Simplify right side
    181,980.75x = 30,526,818,801.64
  5. Step 5: Solve for x
    x = 30,526,818,801.64/181,980.75
  6. Step 6: Final answer
    x = 167,747.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.