Home / 136,622.40-188,538.54-76,193.12

Finding the Fourth Proportional to 136,622.40, 188,538.54 and 76,193.12

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Solution

The fourth proportional to 136,622.40, 188,538.54 and 76,193.12 is: 105,146.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,622.40 : 188,538.54 = 76,193.12 : x
  2. Step 2: Convert to fraction form
    136,622.40/188,538.54 = 76,193.12/x
  3. Step 3: Cross multiply
    136,622.40x = 188,538.54 × 76,193.12
  4. Step 4: Simplify right side
    136,622.40x = 14,365,339,602.84
  5. Step 5: Solve for x
    x = 14,365,339,602.84/136,622.40
  6. Step 6: Final answer
    x = 105,146.30

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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.