Home / 115,415.10-159,272.18-64,424.88

Finding the Fourth Proportional to 115,415.10, 159,272.18 and 64,424.88

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Solution

The fourth proportional to 115,415.10, 159,272.18 and 64,424.88 is: 88,905.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,415.10 : 159,272.18 = 64,424.88 : x
  2. Step 2: Convert to fraction form
    115,415.10/159,272.18 = 64,424.88/x
  3. Step 3: Cross multiply
    115,415.10x = 159,272.18 × 64,424.88
  4. Step 4: Simplify right side
    115,415.10x = 10,261,091,083.84
  5. Step 5: Solve for x
    x = 10,261,091,083.84/115,415.10
  6. Step 6: Final answer
    x = 88,905.97

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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.