Home / 133,104.45-183,681.21-72,672.78

Finding the Fourth Proportional to 133,104.45, 183,681.21 and 72,672.78

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Solution

The fourth proportional to 133,104.45, 183,681.21 and 72,672.78 is: 100,286.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,104.45 : 183,681.21 = 72,672.78 : x
  2. Step 2: Convert to fraction form
    133,104.45/183,681.21 = 72,672.78/x
  3. Step 3: Cross multiply
    133,104.45x = 183,681.21 × 72,672.78
  4. Step 4: Simplify right side
    133,104.45x = 13,348,624,164.46
  5. Step 5: Solve for x
    x = 13,348,624,164.46/133,104.45
  6. Step 6: Final answer
    x = 100,286.84

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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.