Home / 117,126.84-161,639.64-66,150.30

Finding the Fourth Proportional to 117,126.84, 161,639.64 and 66,150.30

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Solution

The fourth proportional to 117,126.84, 161,639.64 and 66,150.30 is: 91,290.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,126.84 : 161,639.64 = 66,150.30 : x
  2. Step 2: Convert to fraction form
    117,126.84/161,639.64 = 66,150.30/x
  3. Step 3: Cross multiply
    117,126.84x = 161,639.64 × 66,150.30
  4. Step 4: Simplify right side
    117,126.84x = 10,692,510,677.89
  5. Step 5: Solve for x
    x = 10,692,510,677.89/117,126.84
  6. Step 6: Final answer
    x = 91,290.01

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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.