Home / 114,639.20-171,667.20-109,390.40

Finding the Fourth Proportional to 114,639.20, 171,667.20 and 109,390.40

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Solution

The fourth proportional to 114,639.20, 171,667.20 and 109,390.40 is: 163,807.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,639.20 : 171,667.20 = 109,390.40 : x
  2. Step 2: Convert to fraction form
    114,639.20/171,667.20 = 109,390.40/x
  3. Step 3: Cross multiply
    114,639.20x = 171,667.20 × 109,390.40
  4. Step 4: Simplify right side
    114,639.20x = 18,778,743,674.88
  5. Step 5: Solve for x
    x = 18,778,743,674.88/114,639.20
  6. Step 6: Final answer
    x = 163,807.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.