Home / 129,831,043.20-194,746,564.80-81,458,102.40

Finding the Fourth Proportional to 129,831,043.20, 194,746,564.80 and 81,458,102.40

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Solution

The fourth proportional to 129,831,043.20, 194,746,564.80 and 81,458,102.40 is: 122,187,153.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,831,043.20 : 194,746,564.80 = 81,458,102.40 : x
  2. Step 2: Convert to fraction form
    129,831,043.20/194,746,564.80 = 81,458,102.40/x
  3. Step 3: Cross multiply
    129,831,043.20x = 194,746,564.80 × 81,458,102.40
  4. Step 4: Simplify right side
    129,831,043.20x = 15,863,685,617,526,638
  5. Step 5: Solve for x
    x = 15,863,685,617,526,638/129,831,043.20
  6. Step 6: Final answer
    x = 122,187,153.60

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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.