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Finding the Fourth Proportional to 100,969,381.80, 151,454,072.70 and 83,750,693.40

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Solution

The fourth proportional to 100,969,381.80, 151,454,072.70 and 83,750,693.40 is: 125,626,040.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,969,381.80 : 151,454,072.70 = 83,750,693.40 : x
  2. Step 2: Convert to fraction form
    100,969,381.80/151,454,072.70 = 83,750,693.40/x
  3. Step 3: Cross multiply
    100,969,381.80x = 151,454,072.70 × 83,750,693.40
  4. Step 4: Simplify right side
    100,969,381.80x = 12,684,383,606,879,010
  5. Step 5: Solve for x
    x = 12,684,383,606,879,010/100,969,381.80
  6. Step 6: Final answer
    x = 125,626,040.10

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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.