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Finding the Fourth Proportional to 134,969.53, 186,259.36 and 74,541.71

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Solution

The fourth proportional to 134,969.53, 186,259.36 and 74,541.71 is: 102,868.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,969.53 : 186,259.36 = 74,541.71 : x
  2. Step 2: Convert to fraction form
    134,969.53/186,259.36 = 74,541.71/x
  3. Step 3: Cross multiply
    134,969.53x = 186,259.36 × 74,541.71
  4. Step 4: Simplify right side
    134,969.53x = 13,884,091,197.91
  5. Step 5: Solve for x
    x = 13,884,091,197.91/134,969.53
  6. Step 6: Final answer
    x = 102,868.34

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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.