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Finding the Fourth Proportional to 139,317.96, 192,258.73 and 75,655.74

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Solution

The fourth proportional to 139,317.96, 192,258.73 and 75,655.74 is: 104,404.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,317.96 : 192,258.73 = 75,655.74 : x
  2. Step 2: Convert to fraction form
    139,317.96/192,258.73 = 75,655.74/x
  3. Step 3: Cross multiply
    139,317.96x = 192,258.73 × 75,655.74
  4. Step 4: Simplify right side
    139,317.96x = 14,545,476,489.61
  5. Step 5: Solve for x
    x = 14,545,476,489.61/139,317.96
  6. Step 6: Final answer
    x = 104,404.89

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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.