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Finding the Fourth Proportional to 188,636.79, 260,323.70 and 103,756.08

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Solution

The fourth proportional to 188,636.79, 260,323.70 and 103,756.08 is: 143,186.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,636.79 : 260,323.70 = 103,756.08 : x
  2. Step 2: Convert to fraction form
    188,636.79/260,323.70 = 103,756.08/x
  3. Step 3: Cross multiply
    188,636.79x = 260,323.70 × 103,756.08
  4. Step 4: Simplify right side
    188,636.79x = 27,010,166,124.32
  5. Step 5: Solve for x
    x = 27,010,166,124.32/188,636.79
  6. Step 6: Final answer
    x = 143,186.10

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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.