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Finding the Fourth Proportional to 104,914.40, 157,760.40 and 87,807.20

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Solution

The fourth proportional to 104,914.40, 157,760.40 and 87,807.20 is: 132,036.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,914.40 : 157,760.40 = 87,807.20 : x
  2. Step 2: Convert to fraction form
    104,914.40/157,760.40 = 87,807.20/x
  3. Step 3: Cross multiply
    104,914.40x = 157,760.40 × 87,807.20
  4. Step 4: Simplify right side
    104,914.40x = 13,852,498,994.88
  5. Step 5: Solve for x
    x = 13,852,498,994.88/104,914.40
  6. Step 6: Final answer
    x = 132,036.20

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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.