Home / 140,441.60-210,662.40-90,675.20

Finding the Fourth Proportional to 140,441.60, 210,662.40 and 90,675.20

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Solution

The fourth proportional to 140,441.60, 210,662.40 and 90,675.20 is: 136,012.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,441.60 : 210,662.40 = 90,675.20 : x
  2. Step 2: Convert to fraction form
    140,441.60/210,662.40 = 90,675.20/x
  3. Step 3: Cross multiply
    140,441.60x = 210,662.40 × 90,675.20
  4. Step 4: Simplify right side
    140,441.60x = 19,101,855,252.48
  5. Step 5: Solve for x
    x = 19,101,855,252.48/140,441.60
  6. Step 6: Final answer
    x = 136,012.80

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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.