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Finding the Fourth Proportional to 139,575.60, 210,122.64 and 127,175.40

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Solution

The fourth proportional to 139,575.60, 210,122.64 and 127,175.40 is: 191,454.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,575.60 : 210,122.64 = 127,175.40 : x
  2. Step 2: Convert to fraction form
    139,575.60/210,122.64 = 127,175.40/x
  3. Step 3: Cross multiply
    139,575.60x = 210,122.64 × 127,175.40
  4. Step 4: Simplify right side
    139,575.60x = 26,722,430,791.06
  5. Step 5: Solve for x
    x = 26,722,430,791.06/139,575.60
  6. Step 6: Final answer
    x = 191,454.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.