Home / 100,880.50-139,215.09-56,179.06

Finding the Fourth Proportional to 100,880.50, 139,215.09 and 56,179.06

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Solution

The fourth proportional to 100,880.50, 139,215.09 and 56,179.06 is: 77,527.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,880.50 : 139,215.09 = 56,179.06 : x
  2. Step 2: Convert to fraction form
    100,880.50/139,215.09 = 56,179.06/x
  3. Step 3: Cross multiply
    100,880.50x = 139,215.09 × 56,179.06
  4. Step 4: Simplify right side
    100,880.50x = 7,820,972,894.02
  5. Step 5: Solve for x
    x = 7,820,972,894.02/100,880.50
  6. Step 6: Final answer
    x = 77,527.10

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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.