Home / 538,105,785.78-807,158,689.35-129,161,936.34

Finding the Fourth Proportional to 538,105,785.78, 807,158,689.35 and 129,161,936.34

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Solution

The fourth proportional to 538,105,785.78, 807,158,689.35 and 129,161,936.34 is: 193,742,907.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,105,785.78 : 807,158,689.35 = 129,161,936.34 : x
  2. Step 2: Convert to fraction form
    538,105,785.78/807,158,689.35 = 129,161,936.34/x
  3. Step 3: Cross multiply
    538,105,785.78x = 807,158,689.35 × 129,161,936.34
  4. Step 4: Simplify right side
    538,105,785.78x = 104,254,179,250,102,544
  5. Step 5: Solve for x
    x = 104,254,179,250,102,544/538,105,785.78
  6. Step 6: Final answer
    x = 193,742,907.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.