Home / 129,276,078.40-193,914,117.60-80,903,137.60

Finding the Fourth Proportional to 129,276,078.40, 193,914,117.60 and 80,903,137.60

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Solution

The fourth proportional to 129,276,078.40, 193,914,117.60 and 80,903,137.60 is: 121,354,706.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,276,078.40 : 193,914,117.60 = 80,903,137.60 : x
  2. Step 2: Convert to fraction form
    129,276,078.40/193,914,117.60 = 80,903,137.60/x
  3. Step 3: Cross multiply
    129,276,078.40x = 193,914,117.60 × 80,903,137.60
  4. Step 4: Simplify right side
    129,276,078.40x = 15,688,260,538,775,380
  5. Step 5: Solve for x
    x = 15,688,260,538,775,380/129,276,078.40
  6. Step 6: Final answer
    x = 121,354,706.40

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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.