Home / 128,308.34-192,450.14-39,538.01

Finding the Fourth Proportional to 128,308.34, 192,450.14 and 39,538.01

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Solution

The fourth proportional to 128,308.34, 192,450.14 and 39,538.01 is: 59,303.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,308.34 : 192,450.14 = 39,538.01 : x
  2. Step 2: Convert to fraction form
    128,308.34/192,450.14 = 39,538.01/x
  3. Step 3: Cross multiply
    128,308.34x = 192,450.14 × 39,538.01
  4. Step 4: Simplify right side
    128,308.34x = 7,609,096,139.79
  5. Step 5: Solve for x
    x = 7,609,096,139.79/128,308.34
  6. Step 6: Final answer
    x = 59,303.21

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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.