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Finding the Fourth Proportional to 139,558.14, 192,588.42 and 75,894.58

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Solution

The fourth proportional to 139,558.14, 192,588.42 and 75,894.58 is: 104,733.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,558.14 : 192,588.42 = 75,894.58 : x
  2. Step 2: Convert to fraction form
    139,558.14/192,588.42 = 75,894.58/x
  3. Step 3: Cross multiply
    139,558.14x = 192,588.42 × 75,894.58
  4. Step 4: Simplify right side
    139,558.14x = 14,616,417,248.76
  5. Step 5: Solve for x
    x = 14,616,417,248.76/139,558.14
  6. Step 6: Final answer
    x = 104,733.53

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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.