Home / 104,685.10-156,979.05-45,490.30

Finding the Fourth Proportional to 104,685.10, 156,979.05 and 45,490.30

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Solution

The fourth proportional to 104,685.10, 156,979.05 and 45,490.30 is: 68,214.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,685.10 : 156,979.05 = 45,490.30 : x
  2. Step 2: Convert to fraction form
    104,685.10/156,979.05 = 45,490.30/x
  3. Step 3: Cross multiply
    104,685.10x = 156,979.05 × 45,490.30
  4. Step 4: Simplify right side
    104,685.10x = 7,141,024,078.22
  5. Step 5: Solve for x
    x = 7,141,024,078.22/104,685.10
  6. Step 6: Final answer
    x = 68,214.33

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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.