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Finding the Fourth Proportional to 124,051.20, 186,076.80 and 89,059.20

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Solution

The fourth proportional to 124,051.20, 186,076.80 and 89,059.20 is: 133,588.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,051.20 : 186,076.80 = 89,059.20 : x
  2. Step 2: Convert to fraction form
    124,051.20/186,076.80 = 89,059.20/x
  3. Step 3: Cross multiply
    124,051.20x = 186,076.80 × 89,059.20
  4. Step 4: Simplify right side
    124,051.20x = 16,571,850,946.56
  5. Step 5: Solve for x
    x = 16,571,850,946.56/124,051.20
  6. Step 6: Final answer
    x = 133,588.80

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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.