Home / 121,037.70-181,556.55-76,860.30

Finding the Fourth Proportional to 121,037.70, 181,556.55 and 76,860.30

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Solution

The fourth proportional to 121,037.70, 181,556.55 and 76,860.30 is: 115,290.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,037.70 : 181,556.55 = 76,860.30 : x
  2. Step 2: Convert to fraction form
    121,037.70/181,556.55 = 76,860.30/x
  3. Step 3: Cross multiply
    121,037.70x = 181,556.55 × 76,860.30
  4. Step 4: Simplify right side
    121,037.70x = 13,954,490,899.97
  5. Step 5: Solve for x
    x = 13,954,490,899.97/121,037.70
  6. Step 6: Final answer
    x = 115,290.45

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1.5x scale

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.