Home / 140,239.90-210,192.54-80,950.30

Finding the Fourth Proportional to 140,239.90, 210,192.54 and 80,950.30

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Solution

The fourth proportional to 140,239.90, 210,192.54 and 80,950.30 is: 121,328.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,239.90 : 210,192.54 = 80,950.30 : x
  2. Step 2: Convert to fraction form
    140,239.90/210,192.54 = 80,950.30/x
  3. Step 3: Cross multiply
    140,239.90x = 210,192.54 × 80,950.30
  4. Step 4: Simplify right side
    140,239.90x = 17,015,149,170.76
  5. Step 5: Solve for x
    x = 17,015,149,170.76/140,239.90
  6. Step 6: Final answer
    x = 121,328.87

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1.5x scale

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.