Home / 209,642.22-289,311.02-118,989.70

Finding the Fourth Proportional to 209,642.22, 289,311.02 and 118,989.70

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Solution

The fourth proportional to 209,642.22, 289,311.02 and 118,989.70 is: 164,208.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,642.22 : 289,311.02 = 118,989.70 : x
  2. Step 2: Convert to fraction form
    209,642.22/289,311.02 = 118,989.70/x
  3. Step 3: Cross multiply
    209,642.22x = 289,311.02 × 118,989.70
  4. Step 4: Simplify right side
    209,642.22x = 34,425,033,308.01
  5. Step 5: Solve for x
    x = 34,425,033,308.01/209,642.22
  6. Step 6: Final answer
    x = 164,208.49

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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.