Home / 191,620,920.70-287,431,381.05-105,314,902.30

Finding the Fourth Proportional to 191,620,920.70, 287,431,381.05 and 105,314,902.30

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Solution

The fourth proportional to 191,620,920.70, 287,431,381.05 and 105,314,902.30 is: 157,972,353.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,620,920.70 : 287,431,381.05 = 105,314,902.30 : x
  2. Step 2: Convert to fraction form
    191,620,920.70/287,431,381.05 = 105,314,902.30/x
  3. Step 3: Cross multiply
    191,620,920.70x = 287,431,381.05 × 105,314,902.30
  4. Step 4: Simplify right side
    191,620,920.70x = 30,270,807,813,234,820
  5. Step 5: Solve for x
    x = 30,270,807,813,234,820/191,620,920.70
  6. Step 6: Final answer
    x = 157,972,353.45

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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.