Home / 138,085,182.64-190,562,004.14-78,544,941.03

Finding the Fourth Proportional to 138,085,182.64, 190,562,004.14 and 78,544,941.03

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Solution

The fourth proportional to 138,085,182.64, 190,562,004.14 and 78,544,941.03 is: 108,394,551.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,085,182.64 : 190,562,004.14 = 78,544,941.03 : x
  2. Step 2: Convert to fraction form
    138,085,182.64/190,562,004.14 = 78,544,941.03/x
  3. Step 3: Cross multiply
    138,085,182.64x = 190,562,004.14 × 78,544,941.03
  4. Step 4: Simplify right side
    138,085,182.64x = 14,967,681,377,342,190
  5. Step 5: Solve for x
    x = 14,967,681,377,342,190/138,085,182.64
  6. Step 6: Final answer
    x = 108,394,551.04

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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.