Home / 155,402,423.99-214,454,029.78-85,786,310.20

Finding the Fourth Proportional to 155,402,423.99, 214,454,029.78 and 85,786,310.20

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Solution

The fourth proportional to 155,402,423.99, 214,454,029.78 and 85,786,310.20 is: 118,384,381.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,402,423.99 : 214,454,029.78 = 85,786,310.20 : x
  2. Step 2: Convert to fraction form
    155,402,423.99/214,454,029.78 = 85,786,310.20/x
  3. Step 3: Cross multiply
    155,402,423.99x = 214,454,029.78 × 85,786,310.20
  4. Step 4: Simplify right side
    155,402,423.99x = 18,397,219,922,347,120
  5. Step 5: Solve for x
    x = 18,397,219,922,347,120/155,402,423.99
  6. Step 6: Final answer
    x = 118,384,381.98

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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.