Home / 129,568.04-178,742.80-75,820.09

Finding the Fourth Proportional to 129,568.04, 178,742.80 and 75,820.09

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Solution

The fourth proportional to 129,568.04, 178,742.80 and 75,820.09 is: 104,595.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,568.04 : 178,742.80 = 75,820.09 : x
  2. Step 2: Convert to fraction form
    129,568.04/178,742.80 = 75,820.09/x
  3. Step 3: Cross multiply
    129,568.04x = 178,742.80 × 75,820.09
  4. Step 4: Simplify right side
    129,568.04x = 13,552,295,182.85
  5. Step 5: Solve for x
    x = 13,552,295,182.85/129,568.04
  6. Step 6: Final answer
    x = 104,595.97

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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.