Home / 100,439,209.53-138,621,236.76-61,303,728.24

Finding the Fourth Proportional to 100,439,209.53, 138,621,236.76 and 61,303,728.24

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Solution

The fourth proportional to 100,439,209.53, 138,621,236.76 and 61,303,728.24 is: 84,608,378.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,439,209.53 : 138,621,236.76 = 61,303,728.24 : x
  2. Step 2: Convert to fraction form
    100,439,209.53/138,621,236.76 = 61,303,728.24/x
  3. Step 3: Cross multiply
    100,439,209.53x = 138,621,236.76 × 61,303,728.24
  4. Step 4: Simplify right side
    100,439,209.53x = 8,497,998,626,627,738
  5. Step 5: Solve for x
    x = 8,497,998,626,627,738/100,439,209.53
  6. Step 6: Final answer
    x = 84,608,378.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.