Home / 139,845.29-192,985.74-76,182.93

Finding the Fourth Proportional to 139,845.29, 192,985.74 and 76,182.93

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Solution

The fourth proportional to 139,845.29, 192,985.74 and 76,182.93 is: 105,132.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,845.29 : 192,985.74 = 76,182.93 : x
  2. Step 2: Convert to fraction form
    139,845.29/192,985.74 = 76,182.93/x
  3. Step 3: Cross multiply
    139,845.29x = 192,985.74 × 76,182.93
  4. Step 4: Simplify right side
    139,845.29x = 14,702,219,121.42
  5. Step 5: Solve for x
    x = 14,702,219,121.42/139,845.29
  6. Step 6: Final answer
    x = 105,132.03

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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.