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Finding the Fourth Proportional to 136,130.88, 203,759.44 and 72,792.80

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Solution

The fourth proportional to 136,130.88, 203,759.44 and 72,792.80 is: 108,955.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,130.88 : 203,759.44 = 72,792.80 : x
  2. Step 2: Convert to fraction form
    136,130.88/203,759.44 = 72,792.80/x
  3. Step 3: Cross multiply
    136,130.88x = 203,759.44 × 72,792.80
  4. Step 4: Simplify right side
    136,130.88x = 14,832,220,164.03
  5. Step 5: Solve for x
    x = 14,832,220,164.03/136,130.88
  6. Step 6: Final answer
    x = 108,955.59

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1.5x scale

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.