Home / 138,244,108-190,782,661.20-79,506,812.96

Finding the Fourth Proportional to 138,244,108, 190,782,661.20 and 79,506,812.96

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Solution

The fourth proportional to 138,244,108, 190,782,661.20 and 79,506,812.96 is: 109,722,733.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,244,108 : 190,782,661.20 = 79,506,812.96 : x
  2. Step 2: Convert to fraction form
    138,244,108/190,782,661.20 = 79,506,812.96/x
  3. Step 3: Cross multiply
    138,244,108x = 190,782,661.20 × 79,506,812.96
  4. Step 4: Simplify right side
    138,244,108x = 15,168,521,360,039,446
  5. Step 5: Solve for x
    x = 15,168,521,360,039,446/138,244,108
  6. Step 6: Final answer
    x = 109,722,733.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.