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Finding the Fourth Proportional to 118,371.25, 163,357.20 and 68,070.25

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Solution

The fourth proportional to 118,371.25, 163,357.20 and 68,070.25 is: 93,939.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,371.25 : 163,357.20 = 68,070.25 : x
  2. Step 2: Convert to fraction form
    118,371.25/163,357.20 = 68,070.25/x
  3. Step 3: Cross multiply
    118,371.25x = 163,357.20 × 68,070.25
  4. Step 4: Simplify right side
    118,371.25x = 11,119,765,443.30
  5. Step 5: Solve for x
    x = 11,119,765,443.30/118,371.25
  6. Step 6: Final answer
    x = 93,939.75

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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.