Home / 117,048,137.68-161,582,441.16-77,954,971.60

Finding the Fourth Proportional to 117,048,137.68, 161,582,441.16 and 77,954,971.60

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Solution

The fourth proportional to 117,048,137.68, 161,582,441.16 and 77,954,971.60 is: 107,615,164.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,048,137.68 : 161,582,441.16 = 77,954,971.60 : x
  2. Step 2: Convert to fraction form
    117,048,137.68/161,582,441.16 = 77,954,971.60/x
  3. Step 3: Cross multiply
    117,048,137.68x = 161,582,441.16 × 77,954,971.60
  4. Step 4: Simplify right side
    117,048,137.68x = 12,596,154,611,686,470
  5. Step 5: Solve for x
    x = 12,596,154,611,686,470/117,048,137.68
  6. Step 6: Final answer
    x = 107,615,164.68

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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.