Home / 236,878.64-326,896.80-129,453.20

Finding the Fourth Proportional to 236,878.64, 326,896.80 and 129,453.20

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Solution

The fourth proportional to 236,878.64, 326,896.80 and 129,453.20 is: 178,647.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,878.64 : 326,896.80 = 129,453.20 : x
  2. Step 2: Convert to fraction form
    236,878.64/326,896.80 = 129,453.20/x
  3. Step 3: Cross multiply
    236,878.64x = 326,896.80 × 129,453.20
  4. Step 4: Simplify right side
    236,878.64x = 42,317,836,829.76
  5. Step 5: Solve for x
    x = 42,317,836,829.76/236,878.64
  6. Step 6: Final answer
    x = 178,647.75

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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.