Home / 102,807.32-154,010.46-67,640.36

Finding the Fourth Proportional to 102,807.32, 154,010.46 and 67,640.36

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Solution

The fourth proportional to 102,807.32, 154,010.46 and 67,640.36 is: 101,328.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,807.32 : 154,010.46 = 67,640.36 : x
  2. Step 2: Convert to fraction form
    102,807.32/154,010.46 = 67,640.36/x
  3. Step 3: Cross multiply
    102,807.32x = 154,010.46 × 67,640.36
  4. Step 4: Simplify right side
    102,807.32x = 10,417,322,958.17
  5. Step 5: Solve for x
    x = 10,417,322,958.17/102,807.32
  6. Step 6: Final answer
    x = 101,328.61

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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.