Home / 272,720.96-409,147.04-85,732.32

Finding the Fourth Proportional to 272,720.96, 409,147.04 and 85,732.32

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Solution

The fourth proportional to 272,720.96, 409,147.04 and 85,732.32 is: 128,619.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,720.96 : 409,147.04 = 85,732.32 : x
  2. Step 2: Convert to fraction form
    272,720.96/409,147.04 = 85,732.32/x
  3. Step 3: Cross multiply
    272,720.96x = 409,147.04 × 85,732.32
  4. Step 4: Simplify right side
    272,720.96x = 35,077,124,960.33
  5. Step 5: Solve for x
    x = 35,077,124,960.33/272,720.96
  6. Step 6: Final answer
    x = 128,619.10

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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.