Home / 102,160.06-140,901-66,361.62

Finding the Fourth Proportional to 102,160.06, 140,901 and 66,361.62

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Solution

The fourth proportional to 102,160.06, 140,901 and 66,361.62 is: 91,527.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,160.06 : 140,901 = 66,361.62 : x
  2. Step 2: Convert to fraction form
    102,160.06/140,901 = 66,361.62/x
  3. Step 3: Cross multiply
    102,160.06x = 140,901 × 66,361.62
  4. Step 4: Simplify right side
    102,160.06x = 9,350,418,619.62
  5. Step 5: Solve for x
    x = 9,350,418,619.62/102,160.06
  6. Step 6: Final answer
    x = 91,527.14

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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.