Home / 112,281.53-154,685.30-78,228.41

Finding the Fourth Proportional to 112,281.53, 154,685.30 and 78,228.41

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Solution

The fourth proportional to 112,281.53, 154,685.30 and 78,228.41 is: 107,771.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,281.53 : 154,685.30 = 78,228.41 : x
  2. Step 2: Convert to fraction form
    112,281.53/154,685.30 = 78,228.41/x
  3. Step 3: Cross multiply
    112,281.53x = 154,685.30 × 78,228.41
  4. Step 4: Simplify right side
    112,281.53x = 12,100,783,904.80
  5. Step 5: Solve for x
    x = 12,100,783,904.80/112,281.53
  6. Step 6: Final answer
    x = 107,771.82

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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.