Home / 170,622.15-256,090.29-86,440.87

Finding the Fourth Proportional to 170,622.15, 256,090.29 and 86,440.87

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Solution

The fourth proportional to 170,622.15, 256,090.29 and 86,440.87 is: 129,740.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,622.15 : 256,090.29 = 86,440.87 : x
  2. Step 2: Convert to fraction form
    170,622.15/256,090.29 = 86,440.87/x
  3. Step 3: Cross multiply
    170,622.15x = 256,090.29 × 86,440.87
  4. Step 4: Simplify right side
    170,622.15x = 22,136,667,466.15
  5. Step 5: Solve for x
    x = 22,136,667,466.15/170,622.15
  6. Step 6: Final answer
    x = 129,740.88

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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.