Home / 141,782,812.80-212,674,219.20-90,722,486.40

Finding the Fourth Proportional to 141,782,812.80, 212,674,219.20 and 90,722,486.40

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Solution

The fourth proportional to 141,782,812.80, 212,674,219.20 and 90,722,486.40 is: 136,083,729.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,782,812.80 : 212,674,219.20 = 90,722,486.40 : x
  2. Step 2: Convert to fraction form
    141,782,812.80/212,674,219.20 = 90,722,486.40/x
  3. Step 3: Cross multiply
    141,782,812.80x = 212,674,219.20 × 90,722,486.40
  4. Step 4: Simplify right side
    141,782,812.80x = 19,294,333,959,002,620
  5. Step 5: Solve for x
    x = 19,294,333,959,002,620/141,782,812.80
  6. Step 6: Final answer
    x = 136,083,729.60

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1.5x scale

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.