Home / 154,871.07-213,743.93-90,361.59

Finding the Fourth Proportional to 154,871.07, 213,743.93 and 90,361.59

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Solution

The fourth proportional to 154,871.07, 213,743.93 and 90,361.59 is: 124,711.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,871.07 : 213,743.93 = 90,361.59 : x
  2. Step 2: Convert to fraction form
    154,871.07/213,743.93 = 90,361.59/x
  3. Step 3: Cross multiply
    154,871.07x = 213,743.93 × 90,361.59
  4. Step 4: Simplify right side
    154,871.07x = 19,314,240,915.84
  5. Step 5: Solve for x
    x = 19,314,240,915.84/154,871.07
  6. Step 6: Final answer
    x = 124,711.74

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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.