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Finding the Fourth Proportional to 115,817.28, 159,800.28 and 70,494.72

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Solution

The fourth proportional to 115,817.28, 159,800.28 and 70,494.72 is: 97,265.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,817.28 : 159,800.28 = 70,494.72 : x
  2. Step 2: Convert to fraction form
    115,817.28/159,800.28 = 70,494.72/x
  3. Step 3: Cross multiply
    115,817.28x = 159,800.28 × 70,494.72
  4. Step 4: Simplify right side
    115,817.28x = 11,265,075,994.52
  5. Step 5: Solve for x
    x = 11,265,075,994.52/115,817.28
  6. Step 6: Final answer
    x = 97,265.93

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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.