Home / 147,144.23-203,065.69-86,717.42

Finding the Fourth Proportional to 147,144.23, 203,065.69 and 86,717.42

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Solution

The fourth proportional to 147,144.23, 203,065.69 and 86,717.42 is: 119,673.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,144.23 : 203,065.69 = 86,717.42 : x
  2. Step 2: Convert to fraction form
    147,144.23/203,065.69 = 86,717.42/x
  3. Step 3: Cross multiply
    147,144.23x = 203,065.69 × 86,717.42
  4. Step 4: Simplify right side
    147,144.23x = 17,609,331,711.99
  5. Step 5: Solve for x
    x = 17,609,331,711.99/147,144.23
  6. Step 6: Final answer
    x = 119,673.96

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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.