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Finding the Fourth Proportional to 115,709.34, 159,649.65 and 67,953.36

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Solution

The fourth proportional to 115,709.34, 159,649.65 and 67,953.36 is: 93,758.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,709.34 : 159,649.65 = 67,953.36 : x
  2. Step 2: Convert to fraction form
    115,709.34/159,649.65 = 67,953.36/x
  3. Step 3: Cross multiply
    115,709.34x = 159,649.65 × 67,953.36
  4. Step 4: Simplify right side
    115,709.34x = 10,848,730,140.32
  5. Step 5: Solve for x
    x = 10,848,730,140.32/115,709.34
  6. Step 6: Final answer
    x = 93,758.47

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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.