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Finding the Fourth Proportional to 188,505.26, 260,153.08 and 103,638.32

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Solution

The fourth proportional to 188,505.26, 260,153.08 and 103,638.32 is: 143,029.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,505.26 : 260,153.08 = 103,638.32 : x
  2. Step 2: Convert to fraction form
    188,505.26/260,153.08 = 103,638.32/x
  3. Step 3: Cross multiply
    188,505.26x = 260,153.08 × 103,638.32
  4. Step 4: Simplify right side
    188,505.26x = 26,961,828,154.03
  5. Step 5: Solve for x
    x = 26,961,828,154.03/188,505.26
  6. Step 6: Final answer
    x = 143,029.58

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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.