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Finding the Fourth Proportional to 188,505.85, 260,131.47 and 103,622.30

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Solution

The fourth proportional to 188,505.85, 260,131.47 and 103,622.30 is: 142,995.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,505.85 : 260,131.47 = 103,622.30 : x
  2. Step 2: Convert to fraction form
    188,505.85/260,131.47 = 103,622.30/x
  3. Step 3: Cross multiply
    188,505.85x = 260,131.47 × 103,622.30
  4. Step 4: Simplify right side
    188,505.85x = 26,955,421,223.78
  5. Step 5: Solve for x
    x = 26,955,421,223.78/188,505.85
  6. Step 6: Final answer
    x = 142,995.14

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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.