Home / 139,547.62-192,569.90-79,122.35

Finding the Fourth Proportional to 139,547.62, 192,569.90 and 79,122.35

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Solution

The fourth proportional to 139,547.62, 192,569.90 and 79,122.35 is: 109,185.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,547.62 : 192,569.90 = 79,122.35 : x
  2. Step 2: Convert to fraction form
    139,547.62/192,569.90 = 79,122.35/x
  3. Step 3: Cross multiply
    139,547.62x = 192,569.90 × 79,122.35
  4. Step 4: Simplify right side
    139,547.62x = 15,236,582,631.65
  5. Step 5: Solve for x
    x = 15,236,582,631.65/139,547.62
  6. Step 6: Final answer
    x = 109,185.55

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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.