Home / 108,748.16-149,913.60-76,860.80

Finding the Fourth Proportional to 108,748.16, 149,913.60 and 76,860.80

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Solution

The fourth proportional to 108,748.16, 149,913.60 and 76,860.80 is: 105,955.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,748.16 : 149,913.60 = 76,860.80 : x
  2. Step 2: Convert to fraction form
    108,748.16/149,913.60 = 76,860.80/x
  3. Step 3: Cross multiply
    108,748.16x = 149,913.60 × 76,860.80
  4. Step 4: Simplify right side
    108,748.16x = 11,522,479,226.88
  5. Step 5: Solve for x
    x = 11,522,479,226.88/108,748.16
  6. Step 6: Final answer
    x = 105,955.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.