Home / 139,834.58-192,971.40-76,172.22

Finding the Fourth Proportional to 139,834.58, 192,971.40 and 76,172.22

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Solution

The fourth proportional to 139,834.58, 192,971.40 and 76,172.22 is: 105,117.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,834.58 : 192,971.40 = 76,172.22 : x
  2. Step 2: Convert to fraction form
    139,834.58/192,971.40 = 76,172.22/x
  3. Step 3: Cross multiply
    139,834.58x = 192,971.40 × 76,172.22
  4. Step 4: Simplify right side
    139,834.58x = 14,699,059,934.51
  5. Step 5: Solve for x
    x = 14,699,059,934.51/139,834.58
  6. Step 6: Final answer
    x = 105,117.49

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1.5x scale

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.