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Finding the Fourth Proportional to 123,216.51, 170,038.65 and 66,627.75

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Solution

The fourth proportional to 123,216.51, 170,038.65 and 66,627.75 is: 91,946.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,216.51 : 170,038.65 = 66,627.75 : x
  2. Step 2: Convert to fraction form
    123,216.51/170,038.65 = 66,627.75/x
  3. Step 3: Cross multiply
    123,216.51x = 170,038.65 × 66,627.75
  4. Step 4: Simplify right side
    123,216.51x = 11,329,292,662.54
  5. Step 5: Solve for x
    x = 11,329,292,662.54/123,216.51
  6. Step 6: Final answer
    x = 91,946.22

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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.