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Finding the Fourth Proportional to 118,803.08, 163,813.92 and 75,725.12

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Solution

The fourth proportional to 118,803.08, 163,813.92 and 75,725.12 is: 104,415.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,803.08 : 163,813.92 = 75,725.12 : x
  2. Step 2: Convert to fraction form
    118,803.08/163,813.92 = 75,725.12/x
  3. Step 3: Cross multiply
    118,803.08x = 163,813.92 × 75,725.12
  4. Step 4: Simplify right side
    118,803.08x = 12,404,828,749.67
  5. Step 5: Solve for x
    x = 12,404,828,749.67/118,803.08
  6. Step 6: Final answer
    x = 104,415.04

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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.