Home / 119,817.18-165,274.47-76,782.24

Finding the Fourth Proportional to 119,817.18, 165,274.47 and 76,782.24

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Solution

The fourth proportional to 119,817.18, 165,274.47 and 76,782.24 is: 105,912.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,817.18 : 165,274.47 = 76,782.24 : x
  2. Step 2: Convert to fraction form
    119,817.18/165,274.47 = 76,782.24/x
  3. Step 3: Cross multiply
    119,817.18x = 165,274.47 × 76,782.24
  4. Step 4: Simplify right side
    119,817.18x = 12,690,144,021.41
  5. Step 5: Solve for x
    x = 12,690,144,021.41/119,817.18
  6. Step 6: Final answer
    x = 105,912.56

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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.