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Finding the Fourth Proportional to 113,373, 156,454.74 and 63,072

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Solution

The fourth proportional to 113,373, 156,454.74 and 63,072 is: 87,039.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,373 : 156,454.74 = 63,072 : x
  2. Step 2: Convert to fraction form
    113,373/156,454.74 = 63,072/x
  3. Step 3: Cross multiply
    113,373x = 156,454.74 × 63,072
  4. Step 4: Simplify right side
    113,373x = 9,867,913,361.28
  5. Step 5: Solve for x
    x = 9,867,913,361.28/113,373
  6. Step 6: Final answer
    x = 87,039.36

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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.