Home / 90,991,603.10-136,487,404.65-85,969,485.65

Finding the Fourth Proportional to 90,991,603.10, 136,487,404.65 and 85,969,485.65

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Solution

The fourth proportional to 90,991,603.10, 136,487,404.65 and 85,969,485.65 is: 128,954,228.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,991,603.10 : 136,487,404.65 = 85,969,485.65 : x
  2. Step 2: Convert to fraction form
    90,991,603.10/136,487,404.65 = 85,969,485.65/x
  3. Step 3: Cross multiply
    90,991,603.10x = 136,487,404.65 × 85,969,485.65
  4. Step 4: Simplify right side
    90,991,603.10x = 11,733,751,975,463,920
  5. Step 5: Solve for x
    x = 11,733,751,975,463,920/90,991,603.10
  6. Step 6: Final answer
    x = 128,954,228.48

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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.