Home / 192,780.90-266,134.16-121,200.39

Finding the Fourth Proportional to 192,780.90, 266,134.16 and 121,200.39

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Solution

The fourth proportional to 192,780.90, 266,134.16 and 121,200.39 is: 167,317.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,780.90 : 266,134.16 = 121,200.39 : x
  2. Step 2: Convert to fraction form
    192,780.90/266,134.16 = 121,200.39/x
  3. Step 3: Cross multiply
    192,780.90x = 266,134.16 × 121,200.39
  4. Step 4: Simplify right side
    192,780.90x = 32,255,563,378.32
  5. Step 5: Solve for x
    x = 32,255,563,378.32/192,780.90
  6. Step 6: Final answer
    x = 167,317.22

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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.