Home / 122,749.61-169,417.71-76,830.54

Finding the Fourth Proportional to 122,749.61, 169,417.71 and 76,830.54

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Solution

The fourth proportional to 122,749.61, 169,417.71 and 76,830.54 is: 106,040.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,749.61 : 169,417.71 = 76,830.54 : x
  2. Step 2: Convert to fraction form
    122,749.61/169,417.71 = 76,830.54/x
  3. Step 3: Cross multiply
    122,749.61x = 169,417.71 × 76,830.54
  4. Step 4: Simplify right side
    122,749.61x = 13,016,454,568.41
  5. Step 5: Solve for x
    x = 13,016,454,568.41/122,749.61
  6. Step 6: Final answer
    x = 106,040.70

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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.