Home / 155,230.55-214,215.61-86,317.28

Finding the Fourth Proportional to 155,230.55, 214,215.61 and 86,317.28

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Solution

The fourth proportional to 155,230.55, 214,215.61 and 86,317.28 is: 119,116.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,230.55 : 214,215.61 = 86,317.28 : x
  2. Step 2: Convert to fraction form
    155,230.55/214,215.61 = 86,317.28/x
  3. Step 3: Cross multiply
    155,230.55x = 214,215.61 × 86,317.28
  4. Step 4: Simplify right side
    155,230.55x = 18,490,507,286.08
  5. Step 5: Solve for x
    x = 18,490,507,286.08/155,230.55
  6. Step 6: Final answer
    x = 119,116.42

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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.