Home / 90,782,409.80-136,173,614.70-80,011,872.20

Finding the Fourth Proportional to 90,782,409.80, 136,173,614.70 and 80,011,872.20

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Solution

The fourth proportional to 90,782,409.80, 136,173,614.70 and 80,011,872.20 is: 120,017,808.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,782,409.80 : 136,173,614.70 = 80,011,872.20 : x
  2. Step 2: Convert to fraction form
    90,782,409.80/136,173,614.70 = 80,011,872.20/x
  3. Step 3: Cross multiply
    90,782,409.80x = 136,173,614.70 × 80,011,872.20
  4. Step 4: Simplify right side
    90,782,409.80x = 10,895,505,856,388,440
  5. Step 5: Solve for x
    x = 10,895,505,856,388,440/90,782,409.80
  6. Step 6: Final answer
    x = 120,017,808.30

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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.