Home / 192,085.10-288,127.65-145,429.10

Finding the Fourth Proportional to 192,085.10, 288,127.65 and 145,429.10

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Solution

The fourth proportional to 192,085.10, 288,127.65 and 145,429.10 is: 218,143.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,085.10 : 288,127.65 = 145,429.10 : x
  2. Step 2: Convert to fraction form
    192,085.10/288,127.65 = 145,429.10/x
  3. Step 3: Cross multiply
    192,085.10x = 288,127.65 × 145,429.10
  4. Step 4: Simplify right side
    192,085.10x = 41,902,144,824.62
  5. Step 5: Solve for x
    x = 41,902,144,824.62/192,085.10
  6. Step 6: Final answer
    x = 218,143.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.