Home / 140,186.40-210,147.80-69,081.60

Finding the Fourth Proportional to 140,186.40, 210,147.80 and 69,081.60

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Solution

The fourth proportional to 140,186.40, 210,147.80 and 69,081.60 is: 103,557.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,186.40 : 210,147.80 = 69,081.60 : x
  2. Step 2: Convert to fraction form
    140,186.40/210,147.80 = 69,081.60/x
  3. Step 3: Cross multiply
    140,186.40x = 210,147.80 × 69,081.60
  4. Step 4: Simplify right side
    140,186.40x = 14,517,346,260.48
  5. Step 5: Solve for x
    x = 14,517,346,260.48/140,186.40
  6. Step 6: Final answer
    x = 103,557.45

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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.