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Finding the Fourth Proportional to 123,461.66, 170,368.26 and 72,476.48

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Solution

The fourth proportional to 123,461.66, 170,368.26 and 72,476.48 is: 100,012.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,461.66 : 170,368.26 = 72,476.48 : x
  2. Step 2: Convert to fraction form
    123,461.66/170,368.26 = 72,476.48/x
  3. Step 3: Cross multiply
    123,461.66x = 170,368.26 × 72,476.48
  4. Step 4: Simplify right side
    123,461.66x = 12,347,691,788.52
  5. Step 5: Solve for x
    x = 12,347,691,788.52/123,461.66
  6. Step 6: Final answer
    x = 100,012.36

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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.