Home / 137,777.08-190,109.73-81,180.76

Finding the Fourth Proportional to 137,777.08, 190,109.73 and 81,180.76

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Solution

The fourth proportional to 137,777.08, 190,109.73 and 81,180.76 is: 112,016.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,777.08 : 190,109.73 = 81,180.76 : x
  2. Step 2: Convert to fraction form
    137,777.08/190,109.73 = 81,180.76/x
  3. Step 3: Cross multiply
    137,777.08x = 190,109.73 × 81,180.76
  4. Step 4: Simplify right side
    137,777.08x = 15,433,252,364.79
  5. Step 5: Solve for x
    x = 15,433,252,364.79/137,777.08
  6. Step 6: Final answer
    x = 112,016.11

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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.