Home / 205,529.32-308,309.10-87,187.24

Finding the Fourth Proportional to 205,529.32, 308,309.10 and 87,187.24

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Solution

The fourth proportional to 205,529.32, 308,309.10 and 87,187.24 is: 130,787.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,529.32 : 308,309.10 = 87,187.24 : x
  2. Step 2: Convert to fraction form
    205,529.32/308,309.10 = 87,187.24/x
  3. Step 3: Cross multiply
    205,529.32x = 308,309.10 × 87,187.24
  4. Step 4: Simplify right side
    205,529.32x = 26,880,619,495.88
  5. Step 5: Solve for x
    x = 26,880,619,495.88/205,529.32
  6. Step 6: Final answer
    x = 130,787.27

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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.