Home / 170,713.81-256,402.68-139,147.03

Finding the Fourth Proportional to 170,713.81, 256,402.68 and 139,147.03

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Solution

The fourth proportional to 170,713.81, 256,402.68 and 139,147.03 is: 208,991.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,713.81 : 256,402.68 = 139,147.03 : x
  2. Step 2: Convert to fraction form
    170,713.81/256,402.68 = 139,147.03/x
  3. Step 3: Cross multiply
    170,713.81x = 256,402.68 × 139,147.03
  4. Step 4: Simplify right side
    170,713.81x = 35,677,671,406.04
  5. Step 5: Solve for x
    x = 35,677,671,406.04/170,713.81
  6. Step 6: Final answer
    x = 208,991.13

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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.