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Finding the Fourth Proportional to 123,053.40, 169,813.80 and 66,464.76

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Solution

The fourth proportional to 123,053.40, 169,813.80 and 66,464.76 is: 91,721.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,053.40 : 169,813.80 = 66,464.76 : x
  2. Step 2: Convert to fraction form
    123,053.40/169,813.80 = 66,464.76/x
  3. Step 3: Cross multiply
    123,053.40x = 169,813.80 × 66,464.76
  4. Step 4: Simplify right side
    123,053.40x = 11,286,633,461.69
  5. Step 5: Solve for x
    x = 11,286,633,461.69/123,053.40
  6. Step 6: Final answer
    x = 91,721.43

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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.