Home / 134,836.45-186,070.87-74,406.30

Finding the Fourth Proportional to 134,836.45, 186,070.87 and 74,406.30

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Solution

The fourth proportional to 134,836.45, 186,070.87 and 74,406.30 is: 102,678.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,836.45 : 186,070.87 = 74,406.30 : x
  2. Step 2: Convert to fraction form
    134,836.45/186,070.87 = 74,406.30/x
  3. Step 3: Cross multiply
    134,836.45x = 186,070.87 × 74,406.30
  4. Step 4: Simplify right side
    134,836.45x = 13,844,844,369.72
  5. Step 5: Solve for x
    x = 13,844,844,369.72/134,836.45
  6. Step 6: Final answer
    x = 102,678.80

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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.