Home / 103,301,342.20-142,571,350.56-78,480,685.54

Finding the Fourth Proportional to 103,301,342.20, 142,571,350.56 and 78,480,685.54

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Solution

The fourth proportional to 103,301,342.20, 142,571,350.56 and 78,480,685.54 is: 108,315,120.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,301,342.20 : 142,571,350.56 = 78,480,685.54 : x
  2. Step 2: Convert to fraction form
    103,301,342.20/142,571,350.56 = 78,480,685.54/x
  3. Step 3: Cross multiply
    103,301,342.20x = 142,571,350.56 × 78,480,685.54
  4. Step 4: Simplify right side
    103,301,342.20x = 11,189,097,330,312,464
  5. Step 5: Solve for x
    x = 11,189,097,330,312,464/103,301,342.20
  6. Step 6: Final answer
    x = 108,315,120.52

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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.