Home / 205,218.34-283,206.08-128,740.66

Finding the Fourth Proportional to 205,218.34, 283,206.08 and 128,740.66

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Solution

The fourth proportional to 205,218.34, 283,206.08 and 128,740.66 is: 177,665.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,218.34 : 283,206.08 = 128,740.66 : x
  2. Step 2: Convert to fraction form
    205,218.34/283,206.08 = 128,740.66/x
  3. Step 3: Cross multiply
    205,218.34x = 283,206.08 × 128,740.66
  4. Step 4: Simplify right side
    205,218.34x = 36,460,137,269.05
  5. Step 5: Solve for x
    x = 36,460,137,269.05/205,218.34
  6. Step 6: Final answer
    x = 177,665.10

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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.