Home / 147,143.56-203,064.79-86,716.75

Finding the Fourth Proportional to 147,143.56, 203,064.79 and 86,716.75

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Solution

The fourth proportional to 147,143.56, 203,064.79 and 86,716.75 is: 119,673.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,143.56 : 203,064.79 = 86,716.75 : x
  2. Step 2: Convert to fraction form
    147,143.56/203,064.79 = 86,716.75/x
  3. Step 3: Cross multiply
    147,143.56x = 203,064.79 × 86,716.75
  4. Step 4: Simplify right side
    147,143.56x = 17,609,117,612.91
  5. Step 5: Solve for x
    x = 17,609,117,612.91/147,143.56
  6. Step 6: Final answer
    x = 119,673.05

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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.