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Finding the Fourth Proportional to 188,621.84, 260,300.32 and 103,740.32

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Solution

The fourth proportional to 188,621.84, 260,300.32 and 103,740.32 is: 143,162.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,621.84 : 260,300.32 = 103,740.32 : x
  2. Step 2: Convert to fraction form
    188,621.84/260,300.32 = 103,740.32/x
  3. Step 3: Cross multiply
    188,621.84x = 260,300.32 × 103,740.32
  4. Step 4: Simplify right side
    188,621.84x = 27,003,638,492.90
  5. Step 5: Solve for x
    x = 27,003,638,492.90/188,621.84
  6. Step 6: Final answer
    x = 143,162.84

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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.