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Finding the Fourth Proportional to 118,157.59, 163,083.95 and 75,128.77

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Solution

The fourth proportional to 118,157.59, 163,083.95 and 75,128.77 is: 103,694.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,157.59 : 163,083.95 = 75,128.77 : x
  2. Step 2: Convert to fraction form
    118,157.59/163,083.95 = 75,128.77/x
  3. Step 3: Cross multiply
    118,157.59x = 163,083.95 × 75,128.77
  4. Step 4: Simplify right side
    118,157.59x = 12,252,296,570.24
  5. Step 5: Solve for x
    x = 12,252,296,570.24/118,157.59
  6. Step 6: Final answer
    x = 103,694.54

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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.