Home / 123,640,002.60-185,460,003.90-78,253,045.80

Finding the Fourth Proportional to 123,640,002.60, 185,460,003.90 and 78,253,045.80

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Solution

The fourth proportional to 123,640,002.60, 185,460,003.90 and 78,253,045.80 is: 117,379,568.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,640,002.60 : 185,460,003.90 = 78,253,045.80 : x
  2. Step 2: Convert to fraction form
    123,640,002.60/185,460,003.90 = 78,253,045.80/x
  3. Step 3: Cross multiply
    123,640,002.60x = 185,460,003.90 × 78,253,045.80
  4. Step 4: Simplify right side
    123,640,002.60x = 14,512,810,179,254,878
  5. Step 5: Solve for x
    x = 14,512,810,179,254,878/123,640,002.60
  6. Step 6: Final answer
    x = 117,379,568.70

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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.