Home / 138,338.48-190,916.39-77,094.18

Finding the Fourth Proportional to 138,338.48, 190,916.39 and 77,094.18

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Solution

The fourth proportional to 138,338.48, 190,916.39 and 77,094.18 is: 106,395.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,338.48 : 190,916.39 = 77,094.18 : x
  2. Step 2: Convert to fraction form
    138,338.48/190,916.39 = 77,094.18/x
  3. Step 3: Cross multiply
    138,338.48x = 190,916.39 × 77,094.18
  4. Step 4: Simplify right side
    138,338.48x = 14,718,542,728.35
  5. Step 5: Solve for x
    x = 14,718,542,728.35/138,338.48
  6. Step 6: Final answer
    x = 106,395.14

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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.