Home / 108,906.12-150,271.20-66,478.32

Finding the Fourth Proportional to 108,906.12, 150,271.20 and 66,478.32

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Solution

The fourth proportional to 108,906.12, 150,271.20 and 66,478.32 is: 91,728.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,906.12 : 150,271.20 = 66,478.32 : x
  2. Step 2: Convert to fraction form
    108,906.12/150,271.20 = 66,478.32/x
  3. Step 3: Cross multiply
    108,906.12x = 150,271.20 × 66,478.32
  4. Step 4: Simplify right side
    108,906.12x = 9,989,776,920.38
  5. Step 5: Solve for x
    x = 9,989,776,920.38/108,906.12
  6. Step 6: Final answer
    x = 91,728.33

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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.