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Finding the Fourth Proportional to 139,317.81, 192,256.83 and 75,656.04

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Solution

The fourth proportional to 139,317.81, 192,256.83 and 75,656.04 is: 104,404.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,317.81 : 192,256.83 = 75,656.04 : x
  2. Step 2: Convert to fraction form
    139,317.81/192,256.83 = 75,656.04/x
  3. Step 3: Cross multiply
    139,317.81x = 192,256.83 × 75,656.04
  4. Step 4: Simplify right side
    139,317.81x = 14,545,390,420.75
  5. Step 5: Solve for x
    x = 14,545,390,420.75/139,317.81
  6. Step 6: Final answer
    x = 104,404.39

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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.