Home / 118,288.45-162,823.73-103,154.41

Finding the Fourth Proportional to 118,288.45, 162,823.73 and 103,154.41

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Solution

The fourth proportional to 118,288.45, 162,823.73 and 103,154.41 is: 141,991.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,288.45 : 162,823.73 = 103,154.41 : x
  2. Step 2: Convert to fraction form
    118,288.45/162,823.73 = 103,154.41/x
  3. Step 3: Cross multiply
    118,288.45x = 162,823.73 × 103,154.41
  4. Step 4: Simplify right side
    118,288.45x = 16,795,985,802.15
  5. Step 5: Solve for x
    x = 16,795,985,802.15/118,288.45
  6. Step 6: Final answer
    x = 141,991.77

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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.