Home / 153,923,728.90-212,412,121.67-83,358,766.48

Finding the Fourth Proportional to 153,923,728.90, 212,412,121.67 and 83,358,766.48

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Solution

The fourth proportional to 153,923,728.90, 212,412,121.67 and 83,358,766.48 is: 115,033,676.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,923,728.90 : 212,412,121.67 = 83,358,766.48 : x
  2. Step 2: Convert to fraction form
    153,923,728.90/212,412,121.67 = 83,358,766.48/x
  3. Step 3: Cross multiply
    153,923,728.90x = 212,412,121.67 × 83,358,766.48
  4. Step 4: Simplify right side
    153,923,728.90x = 17,706,412,447,394,084
  5. Step 5: Solve for x
    x = 17,706,412,447,394,084/153,923,728.90
  6. Step 6: Final answer
    x = 115,033,676.57

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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.