Home / 208,015,445.90-312,023,168.85-100,520,021.90

Finding the Fourth Proportional to 208,015,445.90, 312,023,168.85 and 100,520,021.90

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Solution

The fourth proportional to 208,015,445.90, 312,023,168.85 and 100,520,021.90 is: 150,780,032.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,015,445.90 : 312,023,168.85 = 100,520,021.90 : x
  2. Step 2: Convert to fraction form
    208,015,445.90/312,023,168.85 = 100,520,021.90/x
  3. Step 3: Cross multiply
    208,015,445.90x = 312,023,168.85 × 100,520,021.90
  4. Step 4: Simplify right side
    208,015,445.90x = 31,364,575,766,109,404
  5. Step 5: Solve for x
    x = 31,364,575,766,109,404/208,015,445.90
  6. Step 6: Final answer
    x = 150,780,032.85

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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.