Home / 117,065.07-161,549.06-66,078.45

Finding the Fourth Proportional to 117,065.07, 161,549.06 and 66,078.45

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Solution

The fourth proportional to 117,065.07, 161,549.06 and 66,078.45 is: 91,187.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,065.07 : 161,549.06 = 66,078.45 : x
  2. Step 2: Convert to fraction form
    117,065.07/161,549.06 = 66,078.45/x
  3. Step 3: Cross multiply
    117,065.07x = 161,549.06 × 66,078.45
  4. Step 4: Simplify right side
    117,065.07x = 10,674,911,153.36
  5. Step 5: Solve for x
    x = 10,674,911,153.36/117,065.07
  6. Step 6: Final answer
    x = 91,187.84

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1.5x scale

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.