Home / 210,135,238.40-315,202,857.60-66,528,070.40

Finding the Fourth Proportional to 210,135,238.40, 315,202,857.60 and 66,528,070.40

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Solution

The fourth proportional to 210,135,238.40, 315,202,857.60 and 66,528,070.40 is: 99,792,105.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,135,238.40 : 315,202,857.60 = 66,528,070.40 : x
  2. Step 2: Convert to fraction form
    210,135,238.40/315,202,857.60 = 66,528,070.40/x
  3. Step 3: Cross multiply
    210,135,238.40x = 315,202,857.60 × 66,528,070.40
  4. Step 4: Simplify right side
    210,135,238.40x = 20,969,837,900,693,976
  5. Step 5: Solve for x
    x = 20,969,837,900,693,976/210,135,238.40
  6. Step 6: Final answer
    x = 99,792,105.60

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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.