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Finding the Fourth Proportional to 112,309.93, 154,986.52 and 61,322.50

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Solution

The fourth proportional to 112,309.93, 154,986.52 and 61,322.50 is: 84,624.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,309.93 : 154,986.52 = 61,322.50 : x
  2. Step 2: Convert to fraction form
    112,309.93/154,986.52 = 61,322.50/x
  3. Step 3: Cross multiply
    112,309.93x = 154,986.52 × 61,322.50
  4. Step 4: Simplify right side
    112,309.93x = 9,504,159,791.15
  5. Step 5: Solve for x
    x = 9,504,159,791.15/112,309.93
  6. Step 6: Final answer
    x = 84,624.40

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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.