Home / 139,968,612.90-210,057,895.35-71,776,203.30

Finding the Fourth Proportional to 139,968,612.90, 210,057,895.35 and 71,776,203.30

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Solution

The fourth proportional to 139,968,612.90, 210,057,895.35 and 71,776,203.30 is: 107,718,136.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,612.90 : 210,057,895.35 = 71,776,203.30 : x
  2. Step 2: Convert to fraction form
    139,968,612.90/210,057,895.35 = 71,776,203.30/x
  3. Step 3: Cross multiply
    139,968,612.90x = 210,057,895.35 × 71,776,203.30
  4. Step 4: Simplify right side
    139,968,612.90x = 15,077,158,201,411,724
  5. Step 5: Solve for x
    x = 15,077,158,201,411,724/139,968,612.90
  6. Step 6: Final answer
    x = 107,718,136.87

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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.