Home / 121,288.69-181,924.51-45,372.75

Finding the Fourth Proportional to 121,288.69, 181,924.51 and 45,372.75

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Solution

The fourth proportional to 121,288.69, 181,924.51 and 45,372.75 is: 68,055.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,288.69 : 181,924.51 = 45,372.75 : x
  2. Step 2: Convert to fraction form
    121,288.69/181,924.51 = 45,372.75/x
  3. Step 3: Cross multiply
    121,288.69x = 181,924.51 × 45,372.75
  4. Step 4: Simplify right side
    121,288.69x = 8,254,415,311.10
  5. Step 5: Solve for x
    x = 8,254,415,311.10/121,288.69
  6. Step 6: Final answer
    x = 68,055.94

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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.