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Finding the Fourth Proportional to 105,314.80, 157,741.80 and 91,490.80

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Solution

The fourth proportional to 105,314.80, 157,741.80 and 91,490.80 is: 137,036.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,314.80 : 157,741.80 = 91,490.80 : x
  2. Step 2: Convert to fraction form
    105,314.80/157,741.80 = 91,490.80/x
  3. Step 3: Cross multiply
    105,314.80x = 157,741.80 × 91,490.80
  4. Step 4: Simplify right side
    105,314.80x = 14,431,923,475.44
  5. Step 5: Solve for x
    x = 14,431,923,475.44/105,314.80
  6. Step 6: Final answer
    x = 137,036.04

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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.