Home / 209,871.48-289,632.90-118,019.67

Finding the Fourth Proportional to 209,871.48, 289,632.90 and 118,019.67

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Solution

The fourth proportional to 209,871.48, 289,632.90 and 118,019.67 is: 162,872.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,871.48 : 289,632.90 = 118,019.67 : x
  2. Step 2: Convert to fraction form
    209,871.48/289,632.90 = 118,019.67/x
  3. Step 3: Cross multiply
    209,871.48x = 289,632.90 × 118,019.67
  4. Step 4: Simplify right side
    209,871.48x = 34,182,379,279.14
  5. Step 5: Solve for x
    x = 34,182,379,279.14/209,871.48
  6. Step 6: Final answer
    x = 162,872.91

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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.