Home / 139,834.55-192,970.69-76,172.35

Finding the Fourth Proportional to 139,834.55, 192,970.69 and 76,172.35

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Solution

The fourth proportional to 139,834.55, 192,970.69 and 76,172.35 is: 105,117.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,834.55 : 192,970.69 = 76,172.35 : x
  2. Step 2: Convert to fraction form
    139,834.55/192,970.69 = 76,172.35/x
  3. Step 3: Cross multiply
    139,834.55x = 192,970.69 × 76,172.35
  4. Step 4: Simplify right side
    139,834.55x = 14,699,030,551.21
  5. Step 5: Solve for x
    x = 14,699,030,551.21/139,834.55
  6. Step 6: Final answer
    x = 105,117.30

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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.