Home / 140,005.20-210,007.80-79,972.05

Finding the Fourth Proportional to 140,005.20, 210,007.80 and 79,972.05

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Solution

The fourth proportional to 140,005.20, 210,007.80 and 79,972.05 is: 119,958.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,005.20 : 210,007.80 = 79,972.05 : x
  2. Step 2: Convert to fraction form
    140,005.20/210,007.80 = 79,972.05/x
  3. Step 3: Cross multiply
    140,005.20x = 210,007.80 × 79,972.05
  4. Step 4: Simplify right side
    140,005.20x = 16,794,754,281.99
  5. Step 5: Solve for x
    x = 16,794,754,281.99/140,005.20
  6. Step 6: Final answer
    x = 119,958.08

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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.