Home / 100,894.32-139,234.16-58,477.46

Finding the Fourth Proportional to 100,894.32, 139,234.16 and 58,477.46

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Solution

The fourth proportional to 100,894.32, 139,234.16 and 58,477.46 is: 80,698.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,894.32 : 139,234.16 = 58,477.46 : x
  2. Step 2: Convert to fraction form
    100,894.32/139,234.16 = 58,477.46/x
  3. Step 3: Cross multiply
    100,894.32x = 139,234.16 × 58,477.46
  4. Step 4: Simplify right side
    100,894.32x = 8,142,059,033.48
  5. Step 5: Solve for x
    x = 8,142,059,033.48/100,894.32
  6. Step 6: Final answer
    x = 80,698.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.