Home / 129,487,711.20-194,231,566.80-118,906,130.40

Finding the Fourth Proportional to 129,487,711.20, 194,231,566.80 and 118,906,130.40

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Solution

The fourth proportional to 129,487,711.20, 194,231,566.80 and 118,906,130.40 is: 178,359,195.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,487,711.20 : 194,231,566.80 = 118,906,130.40 : x
  2. Step 2: Convert to fraction form
    129,487,711.20/194,231,566.80 = 118,906,130.40/x
  3. Step 3: Cross multiply
    129,487,711.20x = 194,231,566.80 × 118,906,130.40
  4. Step 4: Simplify right side
    129,487,711.20x = 23,095,324,009,717,112
  5. Step 5: Solve for x
    x = 23,095,324,009,717,112/129,487,711.20
  6. Step 6: Final answer
    x = 178,359,195.60

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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.