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Finding the Fourth Proportional to 83,130.76, 124,696.14 and 20,801.26

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Solution

The fourth proportional to 83,130.76, 124,696.14 and 20,801.26 is: 31,201.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,130.76 : 124,696.14 = 20,801.26 : x
  2. Step 2: Convert to fraction form
    83,130.76/124,696.14 = 20,801.26/x
  3. Step 3: Cross multiply
    83,130.76x = 124,696.14 × 20,801.26
  4. Step 4: Simplify right side
    83,130.76x = 2,593,836,829.14
  5. Step 5: Solve for x
    x = 2,593,836,829.14/83,130.76
  6. Step 6: Final answer
    x = 31,201.89

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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.