Home / 129,359,657.20-194,039,485.80-118,778,076.40

Finding the Fourth Proportional to 129,359,657.20, 194,039,485.80 and 118,778,076.40

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Solution

The fourth proportional to 129,359,657.20, 194,039,485.80 and 118,778,076.40 is: 178,167,114.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,359,657.20 : 194,039,485.80 = 118,778,076.40 : x
  2. Step 2: Convert to fraction form
    129,359,657.20/194,039,485.80 = 118,778,076.40/x
  3. Step 3: Cross multiply
    129,359,657.20x = 194,039,485.80 × 118,778,076.40
  4. Step 4: Simplify right side
    129,359,657.20x = 23,047,636,868,969,116
  5. Step 5: Solve for x
    x = 23,047,636,868,969,116/129,359,657.20
  6. Step 6: Final answer
    x = 178,167,114.60

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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.