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Finding the Fourth Proportional to 140,572.60, 210,858.90 and 127,013.20

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Solution

The fourth proportional to 140,572.60, 210,858.90 and 127,013.20 is: 190,519.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,572.60 : 210,858.90 = 127,013.20 : x
  2. Step 2: Convert to fraction form
    140,572.60/210,858.90 = 127,013.20/x
  3. Step 3: Cross multiply
    140,572.60x = 210,858.90 × 127,013.20
  4. Step 4: Simplify right side
    140,572.60x = 26,781,863,637.48
  5. Step 5: Solve for x
    x = 26,781,863,637.48/140,572.60
  6. Step 6: Final answer
    x = 190,519.80

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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.