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Finding the Fourth Proportional to 134,798.60, 186,020.78 and 74,369.73

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Solution

The fourth proportional to 134,798.60, 186,020.78 and 74,369.73 is: 102,629.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,798.60 : 186,020.78 = 74,369.73 : x
  2. Step 2: Convert to fraction form
    134,798.60/186,020.78 = 74,369.73/x
  3. Step 3: Cross multiply
    134,798.60x = 186,020.78 × 74,369.73
  4. Step 4: Simplify right side
    134,798.60x = 13,834,315,182.99
  5. Step 5: Solve for x
    x = 13,834,315,182.99/134,798.60
  6. Step 6: Final answer
    x = 102,629.52

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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.