Home / 139,547.16-192,569.26-79,121.89

Finding the Fourth Proportional to 139,547.16, 192,569.26 and 79,121.89

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Solution

The fourth proportional to 139,547.16, 192,569.26 and 79,121.89 is: 109,184.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,547.16 : 192,569.26 = 79,121.89 : x
  2. Step 2: Convert to fraction form
    139,547.16/192,569.26 = 79,121.89/x
  3. Step 3: Cross multiply
    139,547.16x = 192,569.26 × 79,121.89
  4. Step 4: Simplify right side
    139,547.16x = 15,236,442,844.26
  5. Step 5: Solve for x
    x = 15,236,442,844.26/139,547.16
  6. Step 6: Final answer
    x = 109,184.90

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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.