Home / 147,255.21-203,207.61-86,829.60

Finding the Fourth Proportional to 147,255.21, 203,207.61 and 86,829.60

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Solution

The fourth proportional to 147,255.21, 203,207.61 and 86,829.60 is: 119,822.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,255.21 : 203,207.61 = 86,829.60 : x
  2. Step 2: Convert to fraction form
    147,255.21/203,207.61 = 86,829.60/x
  3. Step 3: Cross multiply
    147,255.21x = 203,207.61 × 86,829.60
  4. Step 4: Simplify right side
    147,255.21x = 17,644,435,493.26
  5. Step 5: Solve for x
    x = 17,644,435,493.26/147,255.21
  6. Step 6: Final answer
    x = 119,822.15

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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.