Home / 124,717,921.20-187,076,881.80-78,801,418.80

Finding the Fourth Proportional to 124,717,921.20, 187,076,881.80 and 78,801,418.80

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Solution

The fourth proportional to 124,717,921.20, 187,076,881.80 and 78,801,418.80 is: 118,202,128.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,717,921.20 : 187,076,881.80 = 78,801,418.80 : x
  2. Step 2: Convert to fraction form
    124,717,921.20/187,076,881.80 = 78,801,418.80/x
  3. Step 3: Cross multiply
    124,717,921.20x = 187,076,881.80 × 78,801,418.80
  4. Step 4: Simplify right side
    124,717,921.20x = 14,741,923,710,519,898
  5. Step 5: Solve for x
    x = 14,741,923,710,519,898/124,717,921.20
  6. Step 6: Final answer
    x = 118,202,128.20

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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.