Home / 138,324.18-190,885.47-77,895.54

Finding the Fourth Proportional to 138,324.18, 190,885.47 and 77,895.54

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Solution

The fourth proportional to 138,324.18, 190,885.47 and 77,895.54 is: 107,494.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,324.18 : 190,885.47 = 77,895.54 : x
  2. Step 2: Convert to fraction form
    138,324.18/190,885.47 = 77,895.54/x
  3. Step 3: Cross multiply
    138,324.18x = 190,885.47 × 77,895.54
  4. Step 4: Simplify right side
    138,324.18x = 14,869,126,763.80
  5. Step 5: Solve for x
    x = 14,869,126,763.80/138,324.18
  6. Step 6: Final answer
    x = 107,494.78

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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.