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Finding the Fourth Proportional to 139,513.60, 209,270.40 and 127,266.40

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Solution

The fourth proportional to 139,513.60, 209,270.40 and 127,266.40 is: 190,899.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,513.60 : 209,270.40 = 127,266.40 : x
  2. Step 2: Convert to fraction form
    139,513.60/209,270.40 = 127,266.40/x
  3. Step 3: Cross multiply
    139,513.60x = 209,270.40 × 127,266.40
  4. Step 4: Simplify right side
    139,513.60x = 26,633,090,434.56
  5. Step 5: Solve for x
    x = 26,633,090,434.56/139,513.60
  6. Step 6: Final answer
    x = 190,899.60

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Similar ratio
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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.