Home / 139,946.91-193,119.43-79,509.16

Finding the Fourth Proportional to 139,946.91, 193,119.43 and 79,509.16

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Solution

The fourth proportional to 139,946.91, 193,119.43 and 79,509.16 is: 109,718.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,946.91 : 193,119.43 = 79,509.16 : x
  2. Step 2: Convert to fraction form
    139,946.91/193,119.43 = 79,509.16/x
  3. Step 3: Cross multiply
    139,946.91x = 193,119.43 × 79,509.16
  4. Step 4: Simplify right side
    139,946.91x = 15,354,763,658.98
  5. Step 5: Solve for x
    x = 15,354,763,658.98/139,946.91
  6. Step 6: Final answer
    x = 109,718.49

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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.