Home / 140,438,940.80-210,658,411.20-72,414,492.80

Finding the Fourth Proportional to 140,438,940.80, 210,658,411.20 and 72,414,492.80

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Solution

The fourth proportional to 140,438,940.80, 210,658,411.20 and 72,414,492.80 is: 108,621,739.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,438,940.80 : 210,658,411.20 = 72,414,492.80 : x
  2. Step 2: Convert to fraction form
    140,438,940.80/210,658,411.20 = 72,414,492.80/x
  3. Step 3: Cross multiply
    140,438,940.80x = 210,658,411.20 × 72,414,492.80
  4. Step 4: Simplify right side
    140,438,940.80x = 15,254,722,001,101,838
  5. Step 5: Solve for x
    x = 15,254,722,001,101,838/140,438,940.80
  6. Step 6: Final answer
    x = 108,621,739.20

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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.