Home / 80,256,206.40-120,384,309.60-68,710,401.60

Finding the Fourth Proportional to 80,256,206.40, 120,384,309.60 and 68,710,401.60

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Solution

The fourth proportional to 80,256,206.40, 120,384,309.60 and 68,710,401.60 is: 103,065,602.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,256,206.40 : 120,384,309.60 = 68,710,401.60 : x
  2. Step 2: Convert to fraction form
    80,256,206.40/120,384,309.60 = 68,710,401.60/x
  3. Step 3: Cross multiply
    80,256,206.40x = 120,384,309.60 × 68,710,401.60
  4. Step 4: Simplify right side
    80,256,206.40x = 8,271,654,258,954,734
  5. Step 5: Solve for x
    x = 8,271,654,258,954,734/80,256,206.40
  6. Step 6: Final answer
    x = 103,065,602.40

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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.