Home / 108,730.20-162,941.70-80,429.40

Finding the Fourth Proportional to 108,730.20, 162,941.70 and 80,429.40

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Solution

The fourth proportional to 108,730.20, 162,941.70 and 80,429.40 is: 120,530.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,730.20 : 162,941.70 = 80,429.40 : x
  2. Step 2: Convert to fraction form
    108,730.20/162,941.70 = 80,429.40/x
  3. Step 3: Cross multiply
    108,730.20x = 162,941.70 × 80,429.40
  4. Step 4: Simplify right side
    108,730.20x = 13,105,303,165.98
  5. Step 5: Solve for x
    x = 13,105,303,165.98/108,730.20
  6. Step 6: Final answer
    x = 120,530.48

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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.