Home / 120,001.40-180,002.10-80,343.80

Finding the Fourth Proportional to 120,001.40, 180,002.10 and 80,343.80

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Solution

The fourth proportional to 120,001.40, 180,002.10 and 80,343.80 is: 120,515.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,001.40 : 180,002.10 = 80,343.80 : x
  2. Step 2: Convert to fraction form
    120,001.40/180,002.10 = 80,343.80/x
  3. Step 3: Cross multiply
    120,001.40x = 180,002.10 × 80,343.80
  4. Step 4: Simplify right side
    120,001.40x = 14,462,052,721.98
  5. Step 5: Solve for x
    x = 14,462,052,721.98/120,001.40
  6. Step 6: Final answer
    x = 120,515.70

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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.