Home / 115,683.81-159,651.78-64,701.28

Finding the Fourth Proportional to 115,683.81, 159,651.78 and 64,701.28

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Solution

The fourth proportional to 115,683.81, 159,651.78 and 64,701.28 is: 89,292.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,683.81 : 159,651.78 = 64,701.28 : x
  2. Step 2: Convert to fraction form
    115,683.81/159,651.78 = 64,701.28/x
  3. Step 3: Cross multiply
    115,683.81x = 159,651.78 × 64,701.28
  4. Step 4: Simplify right side
    115,683.81x = 10,329,674,520.28
  5. Step 5: Solve for x
    x = 10,329,674,520.28/115,683.81
  6. Step 6: Final answer
    x = 89,292.31

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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.