Home / 209,421.86-289,002.57-113,928.98

Finding the Fourth Proportional to 209,421.86, 289,002.57 and 113,928.98

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Solution

The fourth proportional to 209,421.86, 289,002.57 and 113,928.98 is: 157,222.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,421.86 : 289,002.57 = 113,928.98 : x
  2. Step 2: Convert to fraction form
    209,421.86/289,002.57 = 113,928.98/x
  3. Step 3: Cross multiply
    209,421.86x = 289,002.57 × 113,928.98
  4. Step 4: Simplify right side
    209,421.86x = 32,925,768,017.48
  5. Step 5: Solve for x
    x = 32,925,768,017.48/209,421.86
  6. Step 6: Final answer
    x = 157,222.21

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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.