Home / 155,889.69-214,984.31-102,155.19

Finding the Fourth Proportional to 155,889.69, 214,984.31 and 102,155.19

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Solution

The fourth proportional to 155,889.69, 214,984.31 and 102,155.19 is: 140,880.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,889.69 : 214,984.31 = 102,155.19 : x
  2. Step 2: Convert to fraction form
    155,889.69/214,984.31 = 102,155.19/x
  3. Step 3: Cross multiply
    155,889.69x = 214,984.31 × 102,155.19
  4. Step 4: Simplify right side
    155,889.69x = 21,961,762,524.29
  5. Step 5: Solve for x
    x = 21,961,762,524.29/155,889.69
  6. Step 6: Final answer
    x = 140,880.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.