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Finding the Fourth Proportional to 188,703.62, 260,411 and 103,818.86

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Solution

The fourth proportional to 188,703.62, 260,411 and 103,818.86 is: 143,270.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,703.62 : 260,411 = 103,818.86 : x
  2. Step 2: Convert to fraction form
    188,703.62/260,411 = 103,818.86/x
  3. Step 3: Cross multiply
    188,703.62x = 260,411 × 103,818.86
  4. Step 4: Simplify right side
    188,703.62x = 27,035,573,151.46
  5. Step 5: Solve for x
    x = 27,035,573,151.46/188,703.62
  6. Step 6: Final answer
    x = 143,270.03

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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.