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Finding the Fourth Proportional to 188,522.84, 260,161.52 and 103,639.91

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Solution

The fourth proportional to 188,522.84, 260,161.52 and 103,639.91 is: 143,023.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,522.84 : 260,161.52 = 103,639.91 : x
  2. Step 2: Convert to fraction form
    188,522.84/260,161.52 = 103,639.91/x
  3. Step 3: Cross multiply
    188,522.84x = 260,161.52 × 103,639.91
  4. Step 4: Simplify right side
    188,522.84x = 26,963,116,518.26
  5. Step 5: Solve for x
    x = 26,963,116,518.26/188,522.84
  6. Step 6: Final answer
    x = 143,023.08

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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.