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Finding the Fourth Proportional to 125,798.78, 188,699.71 and 69,748.37

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Solution

The fourth proportional to 125,798.78, 188,699.71 and 69,748.37 is: 104,623.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,798.78 : 188,699.71 = 69,748.37 : x
  2. Step 2: Convert to fraction form
    125,798.78/188,699.71 = 69,748.37/x
  3. Step 3: Cross multiply
    125,798.78x = 188,699.71 × 69,748.37
  4. Step 4: Simplify right side
    125,798.78x = 13,161,496,676.04
  5. Step 5: Solve for x
    x = 13,161,496,676.04/125,798.78
  6. Step 6: Final answer
    x = 104,623.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.