Home / 121,307.09-181,738.89-87,944.40

Finding the Fourth Proportional to 121,307.09, 181,738.89 and 87,944.40

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Solution

The fourth proportional to 121,307.09, 181,738.89 and 87,944.40 is: 131,755.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,307.09 : 181,738.89 = 87,944.40 : x
  2. Step 2: Convert to fraction form
    121,307.09/181,738.89 = 87,944.40/x
  3. Step 3: Cross multiply
    121,307.09x = 181,738.89 × 87,944.40
  4. Step 4: Simplify right side
    121,307.09x = 15,982,917,637.72
  5. Step 5: Solve for x
    x = 15,982,917,637.72/121,307.09
  6. Step 6: Final answer
    x = 131,755.85

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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.