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Finding the Fourth Proportional to 113,135.88, 156,118.41 and 65,392.32

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Solution

The fourth proportional to 113,135.88, 156,118.41 and 65,392.32 is: 90,236.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,135.88 : 156,118.41 = 65,392.32 : x
  2. Step 2: Convert to fraction form
    113,135.88/156,118.41 = 65,392.32/x
  3. Step 3: Cross multiply
    113,135.88x = 156,118.41 × 65,392.32
  4. Step 4: Simplify right side
    113,135.88x = 10,208,945,024.61
  5. Step 5: Solve for x
    x = 10,208,945,024.61/113,135.88
  6. Step 6: Final answer
    x = 90,236.14

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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.