Home / 206,116.90-284,580.40-128,710.80

Finding the Fourth Proportional to 206,116.90, 284,580.40 and 128,710.80

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Solution

The fourth proportional to 206,116.90, 284,580.40 and 128,710.80 is: 177,707.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,116.90 : 284,580.40 = 128,710.80 : x
  2. Step 2: Convert to fraction form
    206,116.90/284,580.40 = 128,710.80/x
  3. Step 3: Cross multiply
    206,116.90x = 284,580.40 × 128,710.80
  4. Step 4: Simplify right side
    206,116.90x = 36,628,570,948.32
  5. Step 5: Solve for x
    x = 36,628,570,948.32/206,116.90
  6. Step 6: Final answer
    x = 177,707.76

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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.