Home / 137,966.16-190,393.11-80,644.89

Finding the Fourth Proportional to 137,966.16, 190,393.11 and 80,644.89

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Solution

The fourth proportional to 137,966.16, 190,393.11 and 80,644.89 is: 111,289.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,966.16 : 190,393.11 = 80,644.89 : x
  2. Step 2: Convert to fraction form
    137,966.16/190,393.11 = 80,644.89/x
  3. Step 3: Cross multiply
    137,966.16x = 190,393.11 × 80,644.89
  4. Step 4: Simplify right side
    137,966.16x = 15,354,231,412.71
  5. Step 5: Solve for x
    x = 15,354,231,412.71/137,966.16
  6. Step 6: Final answer
    x = 111,289.84

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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.