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Finding the Fourth Proportional to 180,003.80, 270,005.70 and 130,431.80

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Solution

The fourth proportional to 180,003.80, 270,005.70 and 130,431.80 is: 195,647.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,003.80 : 270,005.70 = 130,431.80 : x
  2. Step 2: Convert to fraction form
    180,003.80/270,005.70 = 130,431.80/x
  3. Step 3: Cross multiply
    180,003.80x = 270,005.70 × 130,431.80
  4. Step 4: Simplify right side
    180,003.80x = 35,217,329,461.26
  5. Step 5: Solve for x
    x = 35,217,329,461.26/180,003.80
  6. Step 6: Final answer
    x = 195,647.70

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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.