Home / 191,620,919.70-287,431,379.55-105,314,901.30

Finding the Fourth Proportional to 191,620,919.70, 287,431,379.55 and 105,314,901.30

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Solution

The fourth proportional to 191,620,919.70, 287,431,379.55 and 105,314,901.30 is: 157,972,351.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,620,919.70 : 287,431,379.55 = 105,314,901.30 : x
  2. Step 2: Convert to fraction form
    191,620,919.70/287,431,379.55 = 105,314,901.30/x
  3. Step 3: Cross multiply
    191,620,919.70x = 287,431,379.55 × 105,314,901.30
  4. Step 4: Simplify right side
    191,620,919.70x = 30,270,807,367,831,088
  5. Step 5: Solve for x
    x = 30,270,807,367,831,088/191,620,919.70
  6. Step 6: Final answer
    x = 157,972,351.95

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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.