Home / 138,325.05-190,819.62-84,516.30

Finding the Fourth Proportional to 138,325.05, 190,819.62 and 84,516.30

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Solution

The fourth proportional to 138,325.05, 190,819.62 and 84,516.30 is: 116,590.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,325.05 : 190,819.62 = 84,516.30 : x
  2. Step 2: Convert to fraction form
    138,325.05/190,819.62 = 84,516.30/x
  3. Step 3: Cross multiply
    138,325.05x = 190,819.62 × 84,516.30
  4. Step 4: Simplify right side
    138,325.05x = 16,127,368,249.81
  5. Step 5: Solve for x
    x = 16,127,368,249.81/138,325.05
  6. Step 6: Final answer
    x = 116,590.37

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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.