Home / 115,639.47-159,580.40-65,337.39

Finding the Fourth Proportional to 115,639.47, 159,580.40 and 65,337.39

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Solution

The fourth proportional to 115,639.47, 159,580.40 and 65,337.39 is: 90,164.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,639.47 : 159,580.40 = 65,337.39 : x
  2. Step 2: Convert to fraction form
    115,639.47/159,580.40 = 65,337.39/x
  3. Step 3: Cross multiply
    115,639.47x = 159,580.40 × 65,337.39
  4. Step 4: Simplify right side
    115,639.47x = 10,426,566,504.47
  5. Step 5: Solve for x
    x = 10,426,566,504.47/115,639.47
  6. Step 6: Final answer
    x = 90,164.43

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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.