Home / 117,331.56-161,831.52-77,030.61

Finding the Fourth Proportional to 117,331.56, 161,831.52 and 77,030.61

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Solution

The fourth proportional to 117,331.56, 161,831.52 and 77,030.61 is: 106,245.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,331.56 : 161,831.52 = 77,030.61 : x
  2. Step 2: Convert to fraction form
    117,331.56/161,831.52 = 77,030.61/x
  3. Step 3: Cross multiply
    117,331.56x = 161,831.52 × 77,030.61
  4. Step 4: Simplify right side
    117,331.56x = 12,465,980,702.83
  5. Step 5: Solve for x
    x = 12,465,980,702.83/117,331.56
  6. Step 6: Final answer
    x = 106,245.76

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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.