Home / 80,256,220.40-120,384,330.60-68,710,415.60

Finding the Fourth Proportional to 80,256,220.40, 120,384,330.60 and 68,710,415.60

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Solution

The fourth proportional to 80,256,220.40, 120,384,330.60 and 68,710,415.60 is: 103,065,623.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,256,220.40 : 120,384,330.60 = 68,710,415.60 : x
  2. Step 2: Convert to fraction form
    80,256,220.40/120,384,330.60 = 68,710,415.60/x
  3. Step 3: Cross multiply
    80,256,220.40x = 120,384,330.60 × 68,710,415.60
  4. Step 4: Simplify right side
    80,256,220.40x = 8,271,657,387,253,796
  5. Step 5: Solve for x
    x = 8,271,657,387,253,796/80,256,220.40
  6. Step 6: Final answer
    x = 103,065,623.40

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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.