Home / 115,415.88-159,274.35-64,427.70

Finding the Fourth Proportional to 115,415.88, 159,274.35 and 64,427.70

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Solution

The fourth proportional to 115,415.88, 159,274.35 and 64,427.70 is: 88,910.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,415.88 : 159,274.35 = 64,427.70 : x
  2. Step 2: Convert to fraction form
    115,415.88/159,274.35 = 64,427.70/x
  3. Step 3: Cross multiply
    115,415.88x = 159,274.35 × 64,427.70
  4. Step 4: Simplify right side
    115,415.88x = 10,261,680,039.50
  5. Step 5: Solve for x
    x = 10,261,680,039.50/115,415.88
  6. Step 6: Final answer
    x = 88,910.47

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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.