Home / 209,559.16-289,183.62-118,909.72

Finding the Fourth Proportional to 209,559.16, 289,183.62 and 118,909.72

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Solution

The fourth proportional to 209,559.16, 289,183.62 and 118,909.72 is: 164,090.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,559.16 : 289,183.62 = 118,909.72 : x
  2. Step 2: Convert to fraction form
    209,559.16/289,183.62 = 118,909.72/x
  3. Step 3: Cross multiply
    209,559.16x = 289,183.62 × 118,909.72
  4. Step 4: Simplify right side
    209,559.16x = 34,386,744,090.18
  5. Step 5: Solve for x
    x = 34,386,744,090.18/209,559.16
  6. Step 6: Final answer
    x = 164,090.87

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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.