Home / 140,004.20-210,006.30-80,955.20

Finding the Fourth Proportional to 140,004.20, 210,006.30 and 80,955.20

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Solution

The fourth proportional to 140,004.20, 210,006.30 and 80,955.20 is: 121,432.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,004.20 : 210,006.30 = 80,955.20 : x
  2. Step 2: Convert to fraction form
    140,004.20/210,006.30 = 80,955.20/x
  3. Step 3: Cross multiply
    140,004.20x = 210,006.30 × 80,955.20
  4. Step 4: Simplify right side
    140,004.20x = 17,001,102,017.76
  5. Step 5: Solve for x
    x = 17,001,102,017.76/140,004.20
  6. Step 6: Final answer
    x = 121,432.80

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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.