Home / 120,738.60-181,140.30-107,681.40

Finding the Fourth Proportional to 120,738.60, 181,140.30 and 107,681.40

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Solution

The fourth proportional to 120,738.60, 181,140.30 and 107,681.40 is: 161,551.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,738.60 : 181,140.30 = 107,681.40 : x
  2. Step 2: Convert to fraction form
    120,738.60/181,140.30 = 107,681.40/x
  3. Step 3: Cross multiply
    120,738.60x = 181,140.30 × 107,681.40
  4. Step 4: Simplify right side
    120,738.60x = 19,505,441,100.42
  5. Step 5: Solve for x
    x = 19,505,441,100.42/120,738.60
  6. Step 6: Final answer
    x = 161,551.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.