Home / 191,620,931.20-287,431,396.80-105,314,912.80

Finding the Fourth Proportional to 191,620,931.20, 287,431,396.80 and 105,314,912.80

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Solution

The fourth proportional to 191,620,931.20, 287,431,396.80 and 105,314,912.80 is: 157,972,369.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,620,931.20 : 287,431,396.80 = 105,314,912.80 : x
  2. Step 2: Convert to fraction form
    191,620,931.20/287,431,396.80 = 105,314,912.80/x
  3. Step 3: Cross multiply
    191,620,931.20x = 287,431,396.80 × 105,314,912.80
  4. Step 4: Simplify right side
    191,620,931.20x = 30,270,812,489,974,200
  5. Step 5: Solve for x
    x = 30,270,812,489,974,200/191,620,931.20
  6. Step 6: Final answer
    x = 157,972,369.20

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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.