Home / 154,039.68-212,572.40-86,057.60

Finding the Fourth Proportional to 154,039.68, 212,572.40 and 86,057.60

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Solution

The fourth proportional to 154,039.68, 212,572.40 and 86,057.60 is: 118,758.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,039.68 : 212,572.40 = 86,057.60 : x
  2. Step 2: Convert to fraction form
    154,039.68/212,572.40 = 86,057.60/x
  3. Step 3: Cross multiply
    154,039.68x = 212,572.40 × 86,057.60
  4. Step 4: Simplify right side
    154,039.68x = 18,293,469,077.09
  5. Step 5: Solve for x
    x = 18,293,469,077.09/154,039.68
  6. Step 6: Final answer
    x = 118,758.16

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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.