Home / 127,323,040.39-190,965,372.71-81,584,532.79

Finding the Fourth Proportional to 127,323,040.39, 190,965,372.71 and 81,584,532.79

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Solution

The fourth proportional to 127,323,040.39, 190,965,372.71 and 81,584,532.79 is: 122,364,504.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,323,040.39 : 190,965,372.71 = 81,584,532.79 : x
  2. Step 2: Convert to fraction form
    127,323,040.39/190,965,372.71 = 81,584,532.79/x
  3. Step 3: Cross multiply
    127,323,040.39x = 190,965,372.71 × 81,584,532.79
  4. Step 4: Simplify right side
    127,323,040.39x = 15,579,820,711,186,732
  5. Step 5: Solve for x
    x = 15,579,820,711,186,732/127,323,040.39
  6. Step 6: Final answer
    x = 122,364,504.21

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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.