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Finding the Fourth Proportional to 108,653.40, 162,785.70 and 67,051.80

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Solution

The fourth proportional to 108,653.40, 162,785.70 and 67,051.80 is: 100,457.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,653.40 : 162,785.70 = 67,051.80 : x
  2. Step 2: Convert to fraction form
    108,653.40/162,785.70 = 67,051.80/x
  3. Step 3: Cross multiply
    108,653.40x = 162,785.70 × 67,051.80
  4. Step 4: Simplify right side
    108,653.40x = 10,915,074,199.26
  5. Step 5: Solve for x
    x = 10,915,074,199.26/108,653.40
  6. Step 6: Final answer
    x = 100,457.73

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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.