Home / 121,356.85-182,690.47-109,150.15

Finding the Fourth Proportional to 121,356.85, 182,690.47 and 109,150.15

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Solution

The fourth proportional to 121,356.85, 182,690.47 and 109,150.15 is: 164,314.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,356.85 : 182,690.47 = 109,150.15 : x
  2. Step 2: Convert to fraction form
    121,356.85/182,690.47 = 109,150.15/x
  3. Step 3: Cross multiply
    121,356.85x = 182,690.47 × 109,150.15
  4. Step 4: Simplify right side
    121,356.85x = 19,940,692,204.07
  5. Step 5: Solve for x
    x = 19,940,692,204.07/121,356.85
  6. Step 6: Final answer
    x = 164,314.52

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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.