Home / 140,155.70-210,516.54-84,102.28

Finding the Fourth Proportional to 140,155.70, 210,516.54 and 84,102.28

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Solution

The fourth proportional to 140,155.70, 210,516.54 and 84,102.28 is: 126,323.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,155.70 : 210,516.54 = 84,102.28 : x
  2. Step 2: Convert to fraction form
    140,155.70/210,516.54 = 84,102.28/x
  3. Step 3: Cross multiply
    140,155.70x = 210,516.54 × 84,102.28
  4. Step 4: Simplify right side
    140,155.70x = 17,704,920,991.71
  5. Step 5: Solve for x
    x = 17,704,920,991.71/140,155.70
  6. Step 6: Final answer
    x = 126,323.23

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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.