Home / 102,741.86-141,783.27-57,419.79

Finding the Fourth Proportional to 102,741.86, 141,783.27 and 57,419.79

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Solution

The fourth proportional to 102,741.86, 141,783.27 and 57,419.79 is: 79,239.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,741.86 : 141,783.27 = 57,419.79 : x
  2. Step 2: Convert to fraction form
    102,741.86/141,783.27 = 57,419.79/x
  3. Step 3: Cross multiply
    102,741.86x = 141,783.27 × 57,419.79
  4. Step 4: Simplify right side
    102,741.86x = 8,141,165,588.91
  5. Step 5: Solve for x
    x = 8,141,165,588.91/102,741.86
  6. Step 6: Final answer
    x = 79,239.04

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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.