Home / 78,146.08-117,233.64-25,558.36

Finding the Fourth Proportional to 78,146.08, 117,233.64 and 25,558.36

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Solution

The fourth proportional to 78,146.08, 117,233.64 and 25,558.36 is: 38,342.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,146.08 : 117,233.64 = 25,558.36 : x
  2. Step 2: Convert to fraction form
    78,146.08/117,233.64 = 25,558.36/x
  3. Step 3: Cross multiply
    78,146.08x = 117,233.64 × 25,558.36
  4. Step 4: Simplify right side
    78,146.08x = 2,996,299,575.23
  5. Step 5: Solve for x
    x = 2,996,299,575.23/78,146.08
  6. Step 6: Final answer
    x = 38,342.29

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1.5x scale

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.