Home / 115,099,286.40-172,648,929.60-78,819,580.80

Finding the Fourth Proportional to 115,099,286.40, 172,648,929.60 and 78,819,580.80

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Solution

The fourth proportional to 115,099,286.40, 172,648,929.60 and 78,819,580.80 is: 118,229,371.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,099,286.40 : 172,648,929.60 = 78,819,580.80 : x
  2. Step 2: Convert to fraction form
    115,099,286.40/172,648,929.60 = 78,819,580.80/x
  3. Step 3: Cross multiply
    115,099,286.40x = 172,648,929.60 × 78,819,580.80
  4. Step 4: Simplify right side
    115,099,286.40x = 13,608,116,256,640,710
  5. Step 5: Solve for x
    x = 13,608,116,256,640,710/115,099,286.40
  6. Step 6: Final answer
    x = 118,229,371.20

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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.