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Finding the Fourth Proportional to 105,268.80, 157,672.80 and 91,444.80

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Solution

The fourth proportional to 105,268.80, 157,672.80 and 91,444.80 is: 136,967.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,268.80 : 157,672.80 = 91,444.80 : x
  2. Step 2: Convert to fraction form
    105,268.80/157,672.80 = 91,444.80/x
  3. Step 3: Cross multiply
    105,268.80x = 157,672.80 × 91,444.80
  4. Step 4: Simplify right side
    105,268.80x = 14,418,357,661.44
  5. Step 5: Solve for x
    x = 14,418,357,661.44/105,268.80
  6. Step 6: Final answer
    x = 136,967.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.