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Finding the Fourth Proportional to 88,130.60, 132,390.30 and 84,825.80

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Solution

The fourth proportional to 88,130.60, 132,390.30 and 84,825.80 is: 127,425.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,130.60 : 132,390.30 = 84,825.80 : x
  2. Step 2: Convert to fraction form
    88,130.60/132,390.30 = 84,825.80/x
  3. Step 3: Cross multiply
    88,130.60x = 132,390.30 × 84,825.80
  4. Step 4: Simplify right side
    88,130.60x = 11,230,113,109.74
  5. Step 5: Solve for x
    x = 11,230,113,109.74/88,130.60
  6. Step 6: Final answer
    x = 127,425.81

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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.