Home / 201,787.40-302,681.10-130,928.60

Finding the Fourth Proportional to 201,787.40, 302,681.10 and 130,928.60

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Solution

The fourth proportional to 201,787.40, 302,681.10 and 130,928.60 is: 196,392.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,787.40 : 302,681.10 = 130,928.60 : x
  2. Step 2: Convert to fraction form
    201,787.40/302,681.10 = 130,928.60/x
  3. Step 3: Cross multiply
    201,787.40x = 302,681.10 × 130,928.60
  4. Step 4: Simplify right side
    201,787.40x = 39,629,612,669.46
  5. Step 5: Solve for x
    x = 39,629,612,669.46/201,787.40
  6. Step 6: Final answer
    x = 196,392.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.