Home / 112,290.56-154,896-72,546.56

Finding the Fourth Proportional to 112,290.56, 154,896 and 72,546.56

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Solution

The fourth proportional to 112,290.56, 154,896 and 72,546.56 is: 100,072.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,290.56 : 154,896 = 72,546.56 : x
  2. Step 2: Convert to fraction form
    112,290.56/154,896 = 72,546.56/x
  3. Step 3: Cross multiply
    112,290.56x = 154,896 × 72,546.56
  4. Step 4: Simplify right side
    112,290.56x = 11,237,171,957.76
  5. Step 5: Solve for x
    x = 11,237,171,957.76/112,290.56
  6. Step 6: Final answer
    x = 100,072.28

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1.5x scale

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.