Home / 108,207.12-149,147.40-72,384.24

Finding the Fourth Proportional to 108,207.12, 149,147.40 and 72,384.24

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Solution

The fourth proportional to 108,207.12, 149,147.40 and 72,384.24 is: 99,770.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,207.12 : 149,147.40 = 72,384.24 : x
  2. Step 2: Convert to fraction form
    108,207.12/149,147.40 = 72,384.24/x
  3. Step 3: Cross multiply
    108,207.12x = 149,147.40 × 72,384.24
  4. Step 4: Simplify right side
    108,207.12x = 10,795,921,196.98
  5. Step 5: Solve for x
    x = 10,795,921,196.98/108,207.12
  6. Step 6: Final answer
    x = 99,770.89

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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.