Home / 140,583.30-210,619.80-81,242.70

Finding the Fourth Proportional to 140,583.30, 210,619.80 and 81,242.70

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Solution

The fourth proportional to 140,583.30, 210,619.80 and 81,242.70 is: 121,716.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,583.30 : 210,619.80 = 81,242.70 : x
  2. Step 2: Convert to fraction form
    140,583.30/210,619.80 = 81,242.70/x
  3. Step 3: Cross multiply
    140,583.30x = 210,619.80 × 81,242.70
  4. Step 4: Simplify right side
    140,583.30x = 17,111,321,225.46
  5. Step 5: Solve for x
    x = 17,111,321,225.46/140,583.30
  6. Step 6: Final answer
    x = 121,716.60

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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.