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Finding the Fourth Proportional to 100,597.28, 138,828 and 60,317.60

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Solution

The fourth proportional to 100,597.28, 138,828 and 60,317.60 is: 83,240.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,597.28 : 138,828 = 60,317.60 : x
  2. Step 2: Convert to fraction form
    100,597.28/138,828 = 60,317.60/x
  3. Step 3: Cross multiply
    100,597.28x = 138,828 × 60,317.60
  4. Step 4: Simplify right side
    100,597.28x = 8,373,771,772.80
  5. Step 5: Solve for x
    x = 8,373,771,772.80/100,597.28
  6. Step 6: Final answer
    x = 83,240.54

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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.