Home / 171,918.93-257,934.44-86,485.70

Finding the Fourth Proportional to 171,918.93, 257,934.44 and 86,485.70

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Solution

The fourth proportional to 171,918.93, 257,934.44 and 86,485.70 is: 129,756.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,918.93 : 257,934.44 = 86,485.70 : x
  2. Step 2: Convert to fraction form
    171,918.93/257,934.44 = 86,485.70/x
  3. Step 3: Cross multiply
    171,918.93x = 257,934.44 × 86,485.70
  4. Step 4: Simplify right side
    171,918.93x = 22,307,640,597.51
  5. Step 5: Solve for x
    x = 22,307,640,597.51/171,918.93
  6. Step 6: Final answer
    x = 129,756.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.