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Finding the Fourth Proportional to 188,547.49, 260,188.84 and 103,663.89

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Solution

The fourth proportional to 188,547.49, 260,188.84 and 103,663.89 is: 143,052.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,547.49 : 260,188.84 = 103,663.89 : x
  2. Step 2: Convert to fraction form
    188,547.49/260,188.84 = 103,663.89/x
  3. Step 3: Cross multiply
    188,547.49x = 260,188.84 × 103,663.89
  4. Step 4: Simplify right side
    188,547.49x = 26,972,187,288.99
  5. Step 5: Solve for x
    x = 26,972,187,288.99/188,547.49
  6. Step 6: Final answer
    x = 143,052.49

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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.