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Finding the Fourth Proportional to 139,501.62, 209,220.88 and 39,659.60

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Solution

The fourth proportional to 139,501.62, 209,220.88 and 39,659.60 is: 59,480.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,501.62 : 209,220.88 = 39,659.60 : x
  2. Step 2: Convert to fraction form
    139,501.62/209,220.88 = 39,659.60/x
  3. Step 3: Cross multiply
    139,501.62x = 209,220.88 × 39,659.60
  4. Step 4: Simplify right side
    139,501.62x = 8,297,616,412.45
  5. Step 5: Solve for x
    x = 8,297,616,412.45/139,501.62
  6. Step 6: Final answer
    x = 59,480.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.