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Finding the Fourth Proportional to 139,359.81, 192,316.73 and 75,697.62

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Solution

The fourth proportional to 139,359.81, 192,316.73 and 75,697.62 is: 104,462.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,359.81 : 192,316.73 = 75,697.62 : x
  2. Step 2: Convert to fraction form
    139,359.81/192,316.73 = 75,697.62/x
  3. Step 3: Cross multiply
    139,359.81x = 192,316.73 × 75,697.62
  4. Step 4: Simplify right side
    139,359.81x = 14,557,918,368.69
  5. Step 5: Solve for x
    x = 14,557,918,368.69/139,359.81
  6. Step 6: Final answer
    x = 104,462.82

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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.