Home / 139,547.87-192,570.24-79,122.60

Finding the Fourth Proportional to 139,547.87, 192,570.24 and 79,122.60

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Solution

The fourth proportional to 139,547.87, 192,570.24 and 79,122.60 is: 109,185.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,547.87 : 192,570.24 = 79,122.60 : x
  2. Step 2: Convert to fraction form
    139,547.87/192,570.24 = 79,122.60/x
  3. Step 3: Cross multiply
    139,547.87x = 192,570.24 × 79,122.60
  4. Step 4: Simplify right side
    139,547.87x = 15,236,658,071.42
  5. Step 5: Solve for x
    x = 15,236,658,071.42/139,547.87
  6. Step 6: Final answer
    x = 109,185.89

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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.