Home / 115,684.81-159,653.16-64,702.28

Finding the Fourth Proportional to 115,684.81, 159,653.16 and 64,702.28

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Solution

The fourth proportional to 115,684.81, 159,653.16 and 64,702.28 is: 89,293.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,684.81 : 159,653.16 = 64,702.28 : x
  2. Step 2: Convert to fraction form
    115,684.81/159,653.16 = 64,702.28/x
  3. Step 3: Cross multiply
    115,684.81x = 159,653.16 × 64,702.28
  4. Step 4: Simplify right side
    115,684.81x = 10,329,923,461.20
  5. Step 5: Solve for x
    x = 10,329,923,461.20/115,684.81
  6. Step 6: Final answer
    x = 89,293.69

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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.