Home / 153,012.20-229,518.30-68,739.80

Finding the Fourth Proportional to 153,012.20, 229,518.30 and 68,739.80

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Solution

The fourth proportional to 153,012.20, 229,518.30 and 68,739.80 is: 103,109.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,012.20 : 229,518.30 = 68,739.80 : x
  2. Step 2: Convert to fraction form
    153,012.20/229,518.30 = 68,739.80/x
  3. Step 3: Cross multiply
    153,012.20x = 229,518.30 × 68,739.80
  4. Step 4: Simplify right side
    153,012.20x = 15,777,042,038.34
  5. Step 5: Solve for x
    x = 15,777,042,038.34/153,012.20
  6. Step 6: Final answer
    x = 103,109.70

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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.