Home / 209,750.97-289,477.24-128,074.72

Finding the Fourth Proportional to 209,750.97, 289,477.24 and 128,074.72

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Solution

The fourth proportional to 209,750.97, 289,477.24 and 128,074.72 is: 176,755.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,750.97 : 289,477.24 = 128,074.72 : x
  2. Step 2: Convert to fraction form
    209,750.97/289,477.24 = 128,074.72/x
  3. Step 3: Cross multiply
    209,750.97x = 289,477.24 × 128,074.72
  4. Step 4: Simplify right side
    209,750.97x = 37,074,716,678.68
  5. Step 5: Solve for x
    x = 37,074,716,678.68/209,750.97
  6. Step 6: Final answer
    x = 176,755.88

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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.