Home / 117,128.10-161,634.83-63,412.68

Finding the Fourth Proportional to 117,128.10, 161,634.83 and 63,412.68

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Solution

The fourth proportional to 117,128.10, 161,634.83 and 63,412.68 is: 87,508.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,128.10 : 161,634.83 = 63,412.68 : x
  2. Step 2: Convert to fraction form
    117,128.10/161,634.83 = 63,412.68/x
  3. Step 3: Cross multiply
    117,128.10x = 161,634.83 × 63,412.68
  4. Step 4: Simplify right side
    117,128.10x = 10,249,697,434.58
  5. Step 5: Solve for x
    x = 10,249,697,434.58/117,128.10
  6. Step 6: Final answer
    x = 87,508.44

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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.