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Finding the Fourth Proportional to 115,316, 159,053.52 and 74,954.48

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Solution

The fourth proportional to 115,316, 159,053.52 and 74,954.48 is: 103,383.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,316 : 159,053.52 = 74,954.48 : x
  2. Step 2: Convert to fraction form
    115,316/159,053.52 = 74,954.48/x
  3. Step 3: Cross multiply
    115,316x = 159,053.52 × 74,954.48
  4. Step 4: Simplify right side
    115,316x = 11,921,773,883.77
  5. Step 5: Solve for x
    x = 11,921,773,883.77/115,316
  6. Step 6: Final answer
    x = 103,383.52

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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.