Home / 80,256,018.40-120,384,027.60-68,710,213.60

Finding the Fourth Proportional to 80,256,018.40, 120,384,027.60 and 68,710,213.60

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Solution

The fourth proportional to 80,256,018.40, 120,384,027.60 and 68,710,213.60 is: 103,065,320.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,256,018.40 : 120,384,027.60 = 68,710,213.60 : x
  2. Step 2: Convert to fraction form
    80,256,018.40/120,384,027.60 = 68,710,213.60/x
  3. Step 3: Cross multiply
    80,256,018.40x = 120,384,027.60 × 68,710,213.60
  4. Step 4: Simplify right side
    80,256,018.40x = 8,271,612,250,424,294
  5. Step 5: Solve for x
    x = 8,271,612,250,424,294/80,256,018.40
  6. Step 6: Final answer
    x = 103,065,320.40

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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.