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Finding the Fourth Proportional to 136,374.68, 188,248.38 and 79,804.28

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Solution

The fourth proportional to 136,374.68, 188,248.38 and 79,804.28 is: 110,159.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,374.68 : 188,248.38 = 79,804.28 : x
  2. Step 2: Convert to fraction form
    136,374.68/188,248.38 = 79,804.28/x
  3. Step 3: Cross multiply
    136,374.68x = 188,248.38 × 79,804.28
  4. Step 4: Simplify right side
    136,374.68x = 15,023,026,427.07
  5. Step 5: Solve for x
    x = 15,023,026,427.07/136,374.68
  6. Step 6: Final answer
    x = 110,159.94

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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.