Home / 205,219.85-283,208.16-128,742.17

Finding the Fourth Proportional to 205,219.85, 283,208.16 and 128,742.17

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Solution

The fourth proportional to 205,219.85, 283,208.16 and 128,742.17 is: 177,667.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,219.85 : 283,208.16 = 128,742.17 : x
  2. Step 2: Convert to fraction form
    205,219.85/283,208.16 = 128,742.17/x
  3. Step 3: Cross multiply
    205,219.85x = 283,208.16 × 128,742.17
  4. Step 4: Simplify right side
    205,219.85x = 36,460,831,664.07
  5. Step 5: Solve for x
    x = 36,460,831,664.07/205,219.85
  6. Step 6: Final answer
    x = 177,667.18

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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.