Home / 140,017,812.70-210,026,719.05-120,870,190.30

Finding the Fourth Proportional to 140,017,812.70, 210,026,719.05 and 120,870,190.30

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Solution

The fourth proportional to 140,017,812.70, 210,026,719.05 and 120,870,190.30 is: 181,305,285.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,017,812.70 : 210,026,719.05 = 120,870,190.30 : x
  2. Step 2: Convert to fraction form
    140,017,812.70/210,026,719.05 = 120,870,190.30/x
  3. Step 3: Cross multiply
    140,017,812.70x = 210,026,719.05 × 120,870,190.30
  4. Step 4: Simplify right side
    140,017,812.70x = 25,385,969,499,658,136
  5. Step 5: Solve for x
    x = 25,385,969,499,658,136/140,017,812.70
  6. Step 6: Final answer
    x = 181,305,285.45

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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.