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Finding the Fourth Proportional to 88,954.20, 133,504.20 and 86,038.20

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Solution

The fourth proportional to 88,954.20, 133,504.20 and 86,038.20 is: 129,127.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,954.20 : 133,504.20 = 86,038.20 : x
  2. Step 2: Convert to fraction form
    88,954.20/133,504.20 = 86,038.20/x
  3. Step 3: Cross multiply
    88,954.20x = 133,504.20 × 86,038.20
  4. Step 4: Simplify right side
    88,954.20x = 11,486,461,060.44
  5. Step 5: Solve for x
    x = 11,486,461,060.44/88,954.20
  6. Step 6: Final answer
    x = 129,127.81

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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.