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Finding the Fourth Proportional to 113,522.76, 156,661.44 and 65,803.78

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Solution

The fourth proportional to 113,522.76, 156,661.44 and 65,803.78 is: 90,809.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,522.76 : 156,661.44 = 65,803.78 : x
  2. Step 2: Convert to fraction form
    113,522.76/156,661.44 = 65,803.78/x
  3. Step 3: Cross multiply
    113,522.76x = 156,661.44 × 65,803.78
  4. Step 4: Simplify right side
    113,522.76x = 10,308,914,932.24
  5. Step 5: Solve for x
    x = 10,308,914,932.24/113,522.76
  6. Step 6: Final answer
    x = 90,809.23

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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.