Home / 97,115,128.40-145,672,692.60-66,504,126.80

Finding the Fourth Proportional to 97,115,128.40, 145,672,692.60 and 66,504,126.80

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Solution

The fourth proportional to 97,115,128.40, 145,672,692.60 and 66,504,126.80 is: 99,756,190.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,115,128.40 : 145,672,692.60 = 66,504,126.80 : x
  2. Step 2: Convert to fraction form
    97,115,128.40/145,672,692.60 = 66,504,126.80/x
  3. Step 3: Cross multiply
    97,115,128.40x = 145,672,692.60 × 66,504,126.80
  4. Step 4: Simplify right side
    97,115,128.40x = 9,687,835,219,967,820
  5. Step 5: Solve for x
    x = 9,687,835,219,967,820/97,115,128.40
  6. Step 6: Final answer
    x = 99,756,190.20

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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.