Home / 85,136,019.20-127,704,028.80-80,433,094.40

Finding the Fourth Proportional to 85,136,019.20, 127,704,028.80 and 80,433,094.40

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Solution

The fourth proportional to 85,136,019.20, 127,704,028.80 and 80,433,094.40 is: 120,649,641.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,136,019.20 : 127,704,028.80 = 80,433,094.40 : x
  2. Step 2: Convert to fraction form
    85,136,019.20/127,704,028.80 = 80,433,094.40/x
  3. Step 3: Cross multiply
    85,136,019.20x = 127,704,028.80 × 80,433,094.40
  4. Step 4: Simplify right side
    85,136,019.20x = 10,271,630,203,730,720
  5. Step 5: Solve for x
    x = 10,271,630,203,730,720/85,136,019.20
  6. Step 6: Final answer
    x = 120,649,641.60

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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.