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Finding the Fourth Proportional to 188,504.85, 260,130.09 and 103,621.30

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Solution

The fourth proportional to 188,504.85, 260,130.09 and 103,621.30 is: 142,993.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,504.85 : 260,130.09 = 103,621.30 : x
  2. Step 2: Convert to fraction form
    188,504.85/260,130.09 = 103,621.30/x
  3. Step 3: Cross multiply
    188,504.85x = 260,130.09 × 103,621.30
  4. Step 4: Simplify right side
    188,504.85x = 26,955,018,094.92
  5. Step 5: Solve for x
    x = 26,955,018,094.92/188,504.85
  6. Step 6: Final answer
    x = 142,993.76

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1.5x scale

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.