Home / 103,395.36-142,646.64-63,081.12

Finding the Fourth Proportional to 103,395.36, 142,646.64 and 63,081.12

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Solution

The fourth proportional to 103,395.36, 142,646.64 and 63,081.12 is: 87,028.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,395.36 : 142,646.64 = 63,081.12 : x
  2. Step 2: Convert to fraction form
    103,395.36/142,646.64 = 63,081.12/x
  3. Step 3: Cross multiply
    103,395.36x = 142,646.64 × 63,081.12
  4. Step 4: Simplify right side
    103,395.36x = 8,998,309,815.44
  5. Step 5: Solve for x
    x = 8,998,309,815.44/103,395.36
  6. Step 6: Final answer
    x = 87,028.18

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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.