Home / 210,135,243.40-315,202,865.10-66,528,075.40

Finding the Fourth Proportional to 210,135,243.40, 315,202,865.10 and 66,528,075.40

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Solution

The fourth proportional to 210,135,243.40, 315,202,865.10 and 66,528,075.40 is: 99,792,113.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,135,243.40 : 315,202,865.10 = 66,528,075.40 : x
  2. Step 2: Convert to fraction form
    210,135,243.40/315,202,865.10 = 66,528,075.40/x
  3. Step 3: Cross multiply
    210,135,243.40x = 315,202,865.10 × 66,528,075.40
  4. Step 4: Simplify right side
    210,135,243.40x = 20,969,839,975,668,828
  5. Step 5: Solve for x
    x = 20,969,839,975,668,828/210,135,243.40
  6. Step 6: Final answer
    x = 99,792,113.10

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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.