Home / 205,526.40-283,509-129,015.60

Finding the Fourth Proportional to 205,526.40, 283,509 and 129,015.60

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Solution

The fourth proportional to 205,526.40, 283,509 and 129,015.60 is: 177,967.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,526.40 : 283,509 = 129,015.60 : x
  2. Step 2: Convert to fraction form
    205,526.40/283,509 = 129,015.60/x
  3. Step 3: Cross multiply
    205,526.40x = 283,509 × 129,015.60
  4. Step 4: Simplify right side
    205,526.40x = 36,577,083,740.40
  5. Step 5: Solve for x
    x = 36,577,083,740.40/205,526.40
  6. Step 6: Final answer
    x = 177,967.81

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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.