Home / 141,621,981.50-212,198,128.04-86,121,933.23

Finding the Fourth Proportional to 141,621,981.50, 212,198,128.04 and 86,121,933.23

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Solution

The fourth proportional to 141,621,981.50, 212,198,128.04 and 86,121,933.23 is: 129,040,088.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,621,981.50 : 212,198,128.04 = 86,121,933.23 : x
  2. Step 2: Convert to fraction form
    141,621,981.50/212,198,128.04 = 86,121,933.23/x
  3. Step 3: Cross multiply
    141,621,981.50x = 212,198,128.04 × 86,121,933.23
  4. Step 4: Simplify right side
    141,621,981.50x = 18,274,913,014,591,872
  5. Step 5: Solve for x
    x = 18,274,913,014,591,872/141,621,981.50
  6. Step 6: Final answer
    x = 129,040,088.42

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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.