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Finding the Fourth Proportional to 125,717.60, 173,485.80 and 69,128.48

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Solution

The fourth proportional to 125,717.60, 173,485.80 and 69,128.48 is: 95,394.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,717.60 : 173,485.80 = 69,128.48 : x
  2. Step 2: Convert to fraction form
    125,717.60/173,485.80 = 69,128.48/x
  3. Step 3: Cross multiply
    125,717.60x = 173,485.80 × 69,128.48
  4. Step 4: Simplify right side
    125,717.60x = 11,992,809,655.58
  5. Step 5: Solve for x
    x = 11,992,809,655.58/125,717.60
  6. Step 6: Final answer
    x = 95,394.83

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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.