Home / 123,521.64-170,460-66,933.06

Finding the Fourth Proportional to 123,521.64, 170,460 and 66,933.06

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Solution

The fourth proportional to 123,521.64, 170,460 and 66,933.06 is: 92,367.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,521.64 : 170,460 = 66,933.06 : x
  2. Step 2: Convert to fraction form
    123,521.64/170,460 = 66,933.06/x
  3. Step 3: Cross multiply
    123,521.64x = 170,460 × 66,933.06
  4. Step 4: Simplify right side
    123,521.64x = 11,409,409,407.60
  5. Step 5: Solve for x
    x = 11,409,409,407.60/123,521.64
  6. Step 6: Final answer
    x = 92,367.70

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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.