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Finding the Fourth Proportional to 188,783.78, 260,526.48 and 102,748.40

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Solution

The fourth proportional to 188,783.78, 260,526.48 and 102,748.40 is: 141,795.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,783.78 : 260,526.48 = 102,748.40 : x
  2. Step 2: Convert to fraction form
    188,783.78/260,526.48 = 102,748.40/x
  3. Step 3: Cross multiply
    188,783.78x = 260,526.48 × 102,748.40
  4. Step 4: Simplify right side
    188,783.78x = 26,768,678,977.63
  5. Step 5: Solve for x
    x = 26,768,678,977.63/188,783.78
  6. Step 6: Final answer
    x = 141,795.44

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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.