Home / 108,211.12-149,152.92-72,388.24

Finding the Fourth Proportional to 108,211.12, 149,152.92 and 72,388.24

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Solution

The fourth proportional to 108,211.12, 149,152.92 and 72,388.24 is: 99,776.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,211.12 : 149,152.92 = 72,388.24 : x
  2. Step 2: Convert to fraction form
    108,211.12/149,152.92 = 72,388.24/x
  3. Step 3: Cross multiply
    108,211.12x = 149,152.92 × 72,388.24
  4. Step 4: Simplify right side
    108,211.12x = 10,796,917,369.66
  5. Step 5: Solve for x
    x = 10,796,917,369.66/108,211.12
  6. Step 6: Final answer
    x = 99,776.41

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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.