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Finding the Fourth Proportional to 113,351.21, 156,444.24 and 65,630.87

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Solution

The fourth proportional to 113,351.21, 156,444.24 and 65,630.87 is: 90,581.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,351.21 : 156,444.24 = 65,630.87 : x
  2. Step 2: Convert to fraction form
    113,351.21/156,444.24 = 65,630.87/x
  3. Step 3: Cross multiply
    113,351.21x = 156,444.24 × 65,630.87
  4. Step 4: Simplify right side
    113,351.21x = 10,267,571,577.69
  5. Step 5: Solve for x
    x = 10,267,571,577.69/113,351.21
  6. Step 6: Final answer
    x = 90,581.93

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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.