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Finding the Fourth Proportional to 118,371.68, 163,157.88 and 83,927.60

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Solution

The fourth proportional to 118,371.68, 163,157.88 and 83,927.60 is: 115,681.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,371.68 : 163,157.88 = 83,927.60 : x
  2. Step 2: Convert to fraction form
    118,371.68/163,157.88 = 83,927.60/x
  3. Step 3: Cross multiply
    118,371.68x = 163,157.88 × 83,927.60
  4. Step 4: Simplify right side
    118,371.68x = 13,693,449,289.49
  5. Step 5: Solve for x
    x = 13,693,449,289.49/118,371.68
  6. Step 6: Final answer
    x = 115,681.80

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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.