Home / 121,280.51-181,699.10-87,917.82

Finding the Fourth Proportional to 121,280.51, 181,699.10 and 87,917.82

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Solution

The fourth proportional to 121,280.51, 181,699.10 and 87,917.82 is: 131,716.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,280.51 : 181,699.10 = 87,917.82 : x
  2. Step 2: Convert to fraction form
    121,280.51/181,699.10 = 87,917.82/x
  3. Step 3: Cross multiply
    121,280.51x = 181,699.10 × 87,917.82
  4. Step 4: Simplify right side
    121,280.51x = 15,974,588,328.37
  5. Step 5: Solve for x
    x = 15,974,588,328.37/121,280.51
  6. Step 6: Final answer
    x = 131,716.04

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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.