Home / 105,367.43-145,366.40-65,011.20

Finding the Fourth Proportional to 105,367.43, 145,366.40 and 65,011.20

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Solution

The fourth proportional to 105,367.43, 145,366.40 and 65,011.20 is: 89,690.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,367.43 : 145,366.40 = 65,011.20 : x
  2. Step 2: Convert to fraction form
    105,367.43/145,366.40 = 65,011.20/x
  3. Step 3: Cross multiply
    105,367.43x = 145,366.40 × 65,011.20
  4. Step 4: Simplify right side
    105,367.43x = 9,450,443,778.62
  5. Step 5: Solve for x
    x = 9,450,443,778.62/105,367.43
  6. Step 6: Final answer
    x = 89,690.37

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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.