Home / 210,135,221.90-315,202,832.85-66,528,053.90

Finding the Fourth Proportional to 210,135,221.90, 315,202,832.85 and 66,528,053.90

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Solution

The fourth proportional to 210,135,221.90, 315,202,832.85 and 66,528,053.90 is: 99,792,080.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,135,221.90 : 315,202,832.85 = 66,528,053.90 : x
  2. Step 2: Convert to fraction form
    210,135,221.90/315,202,832.85 = 66,528,053.90/x
  3. Step 3: Cross multiply
    210,135,221.90x = 315,202,832.85 × 66,528,053.90
  4. Step 4: Simplify right side
    210,135,221.90x = 20,969,831,053,277,492
  5. Step 5: Solve for x
    x = 20,969,831,053,277,492/210,135,221.90
  6. Step 6: Final answer
    x = 99,792,080.85

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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.