Home / 138,384,823.68-190,975,042.44-76,509,147.78

Finding the Fourth Proportional to 138,384,823.68, 190,975,042.44 and 76,509,147.78

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Solution

The fourth proportional to 138,384,823.68, 190,975,042.44 and 76,509,147.78 is: 105,584,827.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,384,823.68 : 190,975,042.44 = 76,509,147.78 : x
  2. Step 2: Convert to fraction form
    138,384,823.68/190,975,042.44 = 76,509,147.78/x
  3. Step 3: Cross multiply
    138,384,823.68x = 190,975,042.44 × 76,509,147.78
  4. Step 4: Simplify right side
    138,384,823.68x = 14,611,337,744,333,732
  5. Step 5: Solve for x
    x = 14,611,337,744,333,732/138,384,823.68
  6. Step 6: Final answer
    x = 105,584,827.55

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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.