Home / 117,124.55-161,628.90-65,442.06

Finding the Fourth Proportional to 117,124.55, 161,628.90 and 65,442.06

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Solution

The fourth proportional to 117,124.55, 161,628.90 and 65,442.06 is: 90,308.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,124.55 : 161,628.90 = 65,442.06 : x
  2. Step 2: Convert to fraction form
    117,124.55/161,628.90 = 65,442.06/x
  3. Step 3: Cross multiply
    117,124.55x = 161,628.90 × 65,442.06
  4. Step 4: Simplify right side
    117,124.55x = 10,577,328,171.53
  5. Step 5: Solve for x
    x = 10,577,328,171.53/117,124.55
  6. Step 6: Final answer
    x = 90,308.38

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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.