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Finding the Fourth Proportional to 112,702.96, 155,529.84 and 64,955.98

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Solution

The fourth proportional to 112,702.96, 155,529.84 and 64,955.98 is: 89,639.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,702.96 : 155,529.84 = 64,955.98 : x
  2. Step 2: Convert to fraction form
    112,702.96/155,529.84 = 64,955.98/x
  3. Step 3: Cross multiply
    112,702.96x = 155,529.84 × 64,955.98
  4. Step 4: Simplify right side
    112,702.96x = 10,102,593,176.44
  5. Step 5: Solve for x
    x = 10,102,593,176.44/112,702.96
  6. Step 6: Final answer
    x = 89,639.11

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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.