Home / 105,618.39-145,753.38-57,873.45

Finding the Fourth Proportional to 105,618.39, 145,753.38 and 57,873.45

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Solution

The fourth proportional to 105,618.39, 145,753.38 and 57,873.45 is: 79,865.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,618.39 : 145,753.38 = 57,873.45 : x
  2. Step 2: Convert to fraction form
    105,618.39/145,753.38 = 57,873.45/x
  3. Step 3: Cross multiply
    105,618.39x = 145,753.38 × 57,873.45
  4. Step 4: Simplify right side
    105,618.39x = 8,435,250,949.76
  5. Step 5: Solve for x
    x = 8,435,250,949.76/105,618.39
  6. Step 6: Final answer
    x = 79,865.36

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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.