Home / 117,188.40-161,729.94-66,210.48

Finding the Fourth Proportional to 117,188.40, 161,729.94 and 66,210.48

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Solution

The fourth proportional to 117,188.40, 161,729.94 and 66,210.48 is: 91,376.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,188.40 : 161,729.94 = 66,210.48 : x
  2. Step 2: Convert to fraction form
    117,188.40/161,729.94 = 66,210.48/x
  3. Step 3: Cross multiply
    117,188.40x = 161,729.94 × 66,210.48
  4. Step 4: Simplify right side
    117,188.40x = 10,708,216,957.77
  5. Step 5: Solve for x
    x = 10,708,216,957.77/117,188.40
  6. Step 6: Final answer
    x = 91,376.08

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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.