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Finding the Fourth Proportional to 118,487.51, 163,513.85 and 67,499.49

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Solution

The fourth proportional to 118,487.51, 163,513.85 and 67,499.49 is: 93,149.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,487.51 : 163,513.85 = 67,499.49 : x
  2. Step 2: Convert to fraction form
    118,487.51/163,513.85 = 67,499.49/x
  3. Step 3: Cross multiply
    118,487.51x = 163,513.85 × 67,499.49
  4. Step 4: Simplify right side
    118,487.51x = 11,037,101,145.44
  5. Step 5: Solve for x
    x = 11,037,101,145.44/118,487.51
  6. Step 6: Final answer
    x = 93,149.92

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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.