Home / 140,531.40-210,724.20-51,739.20

Finding the Fourth Proportional to 140,531.40, 210,724.20 and 51,739.20

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Solution

The fourth proportional to 140,531.40, 210,724.20 and 51,739.20 is: 77,581.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,531.40 : 210,724.20 = 51,739.20 : x
  2. Step 2: Convert to fraction form
    140,531.40/210,724.20 = 51,739.20/x
  3. Step 3: Cross multiply
    140,531.40x = 210,724.20 × 51,739.20
  4. Step 4: Simplify right side
    140,531.40x = 10,902,701,528.64
  5. Step 5: Solve for x
    x = 10,902,701,528.64/140,531.40
  6. Step 6: Final answer
    x = 77,581.96

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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.