Home / 209,508.42-289,128.15-118,868.21

Finding the Fourth Proportional to 209,508.42, 289,128.15 and 118,868.21

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Solution

The fourth proportional to 209,508.42, 289,128.15 and 118,868.21 is: 164,041.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,508.42 : 289,128.15 = 118,868.21 : x
  2. Step 2: Convert to fraction form
    209,508.42/289,128.15 = 118,868.21/x
  3. Step 3: Cross multiply
    209,508.42x = 289,128.15 × 118,868.21
  4. Step 4: Simplify right side
    209,508.42x = 34,368,145,289.70
  5. Step 5: Solve for x
    x = 34,368,145,289.70/209,508.42
  6. Step 6: Final answer
    x = 164,041.83

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1.5x scale

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.