Home / 139,678.10-192,752.08-76,014.53

Finding the Fourth Proportional to 139,678.10, 192,752.08 and 76,014.53

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Solution

The fourth proportional to 139,678.10, 192,752.08 and 76,014.53 is: 104,898.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,678.10 : 192,752.08 = 76,014.53 : x
  2. Step 2: Convert to fraction form
    139,678.10/192,752.08 = 76,014.53/x
  3. Step 3: Cross multiply
    139,678.10x = 192,752.08 × 76,014.53
  4. Step 4: Simplify right side
    139,678.10x = 14,651,957,423.89
  5. Step 5: Solve for x
    x = 14,651,957,423.89/139,678.10
  6. Step 6: Final answer
    x = 104,898.03

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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.