Home / 105,289.38-158,644.44-86,979.60

Finding the Fourth Proportional to 105,289.38, 158,644.44 and 86,979.60

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Solution

The fourth proportional to 105,289.38, 158,644.44 and 86,979.60 is: 131,056.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,289.38 : 158,644.44 = 86,979.60 : x
  2. Step 2: Convert to fraction form
    105,289.38/158,644.44 = 86,979.60/x
  3. Step 3: Cross multiply
    105,289.38x = 158,644.44 × 86,979.60
  4. Step 4: Simplify right side
    105,289.38x = 13,798,829,933.42
  5. Step 5: Solve for x
    x = 13,798,829,933.42/105,289.38
  6. Step 6: Final answer
    x = 131,056.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.