Home / 112,187-154,837.90-66,891.12

Finding the Fourth Proportional to 112,187, 154,837.90 and 66,891.12

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Solution

The fourth proportional to 112,187, 154,837.90 and 66,891.12 is: 92,321.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,187 : 154,837.90 = 66,891.12 : x
  2. Step 2: Convert to fraction form
    112,187/154,837.90 = 66,891.12/x
  3. Step 3: Cross multiply
    112,187x = 154,837.90 × 66,891.12
  4. Step 4: Simplify right side
    112,187x = 10,357,280,549.45
  5. Step 5: Solve for x
    x = 10,357,280,549.45/112,187
  6. Step 6: Final answer
    x = 92,321.58

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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.