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Finding the Fourth Proportional to 123,551.80, 170,501.72 and 66,963.16

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Solution

The fourth proportional to 123,551.80, 170,501.72 and 66,963.16 is: 92,409.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,551.80 : 170,501.72 = 66,963.16 : x
  2. Step 2: Convert to fraction form
    123,551.80/170,501.72 = 66,963.16/x
  3. Step 3: Cross multiply
    123,551.80x = 170,501.72 × 66,963.16
  4. Step 4: Simplify right side
    123,551.80x = 11,417,333,956.64
  5. Step 5: Solve for x
    x = 11,417,333,956.64/123,551.80
  6. Step 6: Final answer
    x = 92,409.29

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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.