Home / 156,913.98-216,591.21-100,325.36

Finding the Fourth Proportional to 156,913.98, 216,591.21 and 100,325.36

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Solution

The fourth proportional to 156,913.98, 216,591.21 and 100,325.36 is: 138,480.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,913.98 : 216,591.21 = 100,325.36 : x
  2. Step 2: Convert to fraction form
    156,913.98/216,591.21 = 100,325.36/x
  3. Step 3: Cross multiply
    156,913.98x = 216,591.21 × 100,325.36
  4. Step 4: Simplify right side
    156,913.98x = 21,729,590,033.13
  5. Step 5: Solve for x
    x = 21,729,590,033.13/156,913.98
  6. Step 6: Final answer
    x = 138,480.91

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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.