Home / 120,220.86-165,955.83-74,921.22

Finding the Fourth Proportional to 120,220.86, 165,955.83 and 74,921.22

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Solution

The fourth proportional to 120,220.86, 165,955.83 and 74,921.22 is: 103,423.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,220.86 : 165,955.83 = 74,921.22 : x
  2. Step 2: Convert to fraction form
    120,220.86/165,955.83 = 74,921.22/x
  3. Step 3: Cross multiply
    120,220.86x = 165,955.83 × 74,921.22
  4. Step 4: Simplify right side
    120,220.86x = 12,433,613,249.71
  5. Step 5: Solve for x
    x = 12,433,613,249.71/120,220.86
  6. Step 6: Final answer
    x = 103,423.09

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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.