Home / 139,740.38-192,779.43-94,403.78

Finding the Fourth Proportional to 139,740.38, 192,779.43 and 94,403.78

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Solution

The fourth proportional to 139,740.38, 192,779.43 and 94,403.78 is: 130,235.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,740.38 : 192,779.43 = 94,403.78 : x
  2. Step 2: Convert to fraction form
    139,740.38/192,779.43 = 94,403.78/x
  3. Step 3: Cross multiply
    139,740.38x = 192,779.43 × 94,403.78
  4. Step 4: Simplify right side
    139,740.38x = 18,199,107,026.18
  5. Step 5: Solve for x
    x = 18,199,107,026.18/139,740.38
  6. Step 6: Final answer
    x = 130,235.13

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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.