Home / 121,209.40-181,749.30-51,009.40

Finding the Fourth Proportional to 121,209.40, 181,749.30 and 51,009.40

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Solution

The fourth proportional to 121,209.40, 181,749.30 and 51,009.40 is: 76,486.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,209.40 : 181,749.30 = 51,009.40 : x
  2. Step 2: Convert to fraction form
    121,209.40/181,749.30 = 51,009.40/x
  3. Step 3: Cross multiply
    121,209.40x = 181,749.30 × 51,009.40
  4. Step 4: Simplify right side
    121,209.40x = 9,270,922,743.42
  5. Step 5: Solve for x
    x = 9,270,922,743.42/121,209.40
  6. Step 6: Final answer
    x = 76,486.83

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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.