Home / 115,361.32-159,165.06-72,376.36

Finding the Fourth Proportional to 115,361.32, 159,165.06 and 72,376.36

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Solution

The fourth proportional to 115,361.32, 159,165.06 and 72,376.36 is: 99,858.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,361.32 : 159,165.06 = 72,376.36 : x
  2. Step 2: Convert to fraction form
    115,361.32/159,165.06 = 72,376.36/x
  3. Step 3: Cross multiply
    115,361.32x = 159,165.06 × 72,376.36
  4. Step 4: Simplify right side
    115,361.32x = 11,519,787,681.98
  5. Step 5: Solve for x
    x = 11,519,787,681.98/115,361.32
  6. Step 6: Final answer
    x = 99,858.32

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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.