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Finding the Fourth Proportional to 115,193.76, 158,960.72 and 64,204.80

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Solution

The fourth proportional to 115,193.76, 158,960.72 and 64,204.80 is: 88,598.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,193.76 : 158,960.72 = 64,204.80 : x
  2. Step 2: Convert to fraction form
    115,193.76/158,960.72 = 64,204.80/x
  3. Step 3: Cross multiply
    115,193.76x = 158,960.72 × 64,204.80
  4. Step 4: Simplify right side
    115,193.76x = 10,206,041,235.46
  5. Step 5: Solve for x
    x = 10,206,041,235.46/115,193.76
  6. Step 6: Final answer
    x = 88,598.91

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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.