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Finding the Fourth Proportional to 153,815.20, 230,852.40 and 69,704.80

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Solution

The fourth proportional to 153,815.20, 230,852.40 and 69,704.80 is: 104,615.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,815.20 : 230,852.40 = 69,704.80 : x
  2. Step 2: Convert to fraction form
    153,815.20/230,852.40 = 69,704.80/x
  3. Step 3: Cross multiply
    153,815.20x = 230,852.40 × 69,704.80
  4. Step 4: Simplify right side
    153,815.20x = 16,091,520,371.52
  5. Step 5: Solve for x
    x = 16,091,520,371.52/153,815.20
  6. Step 6: Final answer
    x = 104,615.93

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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.