Home / 100,724.85-151,087.28-47,383.72

Finding the Fourth Proportional to 100,724.85, 151,087.28 and 47,383.72

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Solution

The fourth proportional to 100,724.85, 151,087.28 and 47,383.72 is: 71,075.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,724.85 : 151,087.28 = 47,383.72 : x
  2. Step 2: Convert to fraction form
    100,724.85/151,087.28 = 47,383.72/x
  3. Step 3: Cross multiply
    100,724.85x = 151,087.28 × 47,383.72
  4. Step 4: Simplify right side
    100,724.85x = 7,159,076,756.44
  5. Step 5: Solve for x
    x = 7,159,076,756.44/100,724.85
  6. Step 6: Final answer
    x = 71,075.58

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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.