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Finding the Fourth Proportional to 139,146.59, 192,022.66 and 75,484.39

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Solution

The fourth proportional to 139,146.59, 192,022.66 and 75,484.39 is: 104,168.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,146.59 : 192,022.66 = 75,484.39 : x
  2. Step 2: Convert to fraction form
    139,146.59/192,022.66 = 75,484.39/x
  3. Step 3: Cross multiply
    139,146.59x = 192,022.66 × 75,484.39
  4. Step 4: Simplify right side
    139,146.59x = 14,494,712,687.51
  5. Step 5: Solve for x
    x = 14,494,712,687.51/139,146.59
  6. Step 6: Final answer
    x = 104,168.66

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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.