Home / 123,206.64-170,025.12-66,618

Finding the Fourth Proportional to 123,206.64, 170,025.12 and 66,618

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Solution

The fourth proportional to 123,206.64, 170,025.12 and 66,618 is: 91,932.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,206.64 : 170,025.12 = 66,618 : x
  2. Step 2: Convert to fraction form
    123,206.64/170,025.12 = 66,618/x
  3. Step 3: Cross multiply
    123,206.64x = 170,025.12 × 66,618
  4. Step 4: Simplify right side
    123,206.64x = 11,326,733,444.16
  5. Step 5: Solve for x
    x = 11,326,733,444.16/123,206.64
  6. Step 6: Final answer
    x = 91,932.82

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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.