Home / 106,986.40-160,537.20-47,831.20

Finding the Fourth Proportional to 106,986.40, 160,537.20 and 47,831.20

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Solution

The fourth proportional to 106,986.40, 160,537.20 and 47,831.20 is: 71,772.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,986.40 : 160,537.20 = 47,831.20 : x
  2. Step 2: Convert to fraction form
    106,986.40/160,537.20 = 47,831.20/x
  3. Step 3: Cross multiply
    106,986.40x = 160,537.20 × 47,831.20
  4. Step 4: Simplify right side
    106,986.40x = 7,678,686,920.64
  5. Step 5: Solve for x
    x = 7,678,686,920.64/106,986.40
  6. Step 6: Final answer
    x = 71,772.55

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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.