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Finding the Fourth Proportional to 118,131.54, 163,015.08 and 67,830.54

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Solution

The fourth proportional to 118,131.54, 163,015.08 and 67,830.54 is: 93,602.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,131.54 : 163,015.08 = 67,830.54 : x
  2. Step 2: Convert to fraction form
    118,131.54/163,015.08 = 67,830.54/x
  3. Step 3: Cross multiply
    118,131.54x = 163,015.08 × 67,830.54
  4. Step 4: Simplify right side
    118,131.54x = 11,057,400,904.54
  5. Step 5: Solve for x
    x = 11,057,400,904.54/118,131.54
  6. Step 6: Final answer
    x = 93,602.44

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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.