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Finding the Fourth Proportional to 136,074.78, 187,788.02 and 74,825.64

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Solution

The fourth proportional to 136,074.78, 187,788.02 and 74,825.64 is: 103,262.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,074.78 : 187,788.02 = 74,825.64 : x
  2. Step 2: Convert to fraction form
    136,074.78/187,788.02 = 74,825.64/x
  3. Step 3: Cross multiply
    136,074.78x = 187,788.02 × 74,825.64
  4. Step 4: Simplify right side
    136,074.78x = 14,051,358,406.70
  5. Step 5: Solve for x
    x = 14,051,358,406.70/136,074.78
  6. Step 6: Final answer
    x = 103,262.03

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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.