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Finding the Fourth Proportional to 123,671.40, 170,669.58 and 69,953.88

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Solution

The fourth proportional to 123,671.40, 170,669.58 and 69,953.88 is: 96,538.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,671.40 : 170,669.58 = 69,953.88 : x
  2. Step 2: Convert to fraction form
    123,671.40/170,669.58 = 69,953.88/x
  3. Step 3: Cross multiply
    123,671.40x = 170,669.58 × 69,953.88
  4. Step 4: Simplify right side
    123,671.40x = 11,938,999,318.97
  5. Step 5: Solve for x
    x = 11,938,999,318.97/123,671.40
  6. Step 6: Final answer
    x = 96,538.08

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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.