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Finding the Fourth Proportional to 130,361.49, 179,901.41 and 85,068.45

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Solution

The fourth proportional to 130,361.49, 179,901.41 and 85,068.45 is: 117,396.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,361.49 : 179,901.41 = 85,068.45 : x
  2. Step 2: Convert to fraction form
    130,361.49/179,901.41 = 85,068.45/x
  3. Step 3: Cross multiply
    130,361.49x = 179,901.41 × 85,068.45
  4. Step 4: Simplify right side
    130,361.49x = 15,303,933,676.17
  5. Step 5: Solve for x
    x = 15,303,933,676.17/130,361.49
  6. Step 6: Final answer
    x = 117,396.12

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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.