Home / 108,438.85-149,701.78-67,615.08

Finding the Fourth Proportional to 108,438.85, 149,701.78 and 67,615.08

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Solution

The fourth proportional to 108,438.85, 149,701.78 and 67,615.08 is: 93,343.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,438.85 : 149,701.78 = 67,615.08 : x
  2. Step 2: Convert to fraction form
    108,438.85/149,701.78 = 67,615.08/x
  3. Step 3: Cross multiply
    108,438.85x = 149,701.78 × 67,615.08
  4. Step 4: Simplify right side
    108,438.85x = 10,122,097,353.98
  5. Step 5: Solve for x
    x = 10,122,097,353.98/108,438.85
  6. Step 6: Final answer
    x = 93,343.83

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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.