Home / 122,038.49-168,393.06-76,684.35

Finding the Fourth Proportional to 122,038.49, 168,393.06 and 76,684.35

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Solution

The fourth proportional to 122,038.49, 168,393.06 and 76,684.35 is: 105,811.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,038.49 : 168,393.06 = 76,684.35 : x
  2. Step 2: Convert to fraction form
    122,038.49/168,393.06 = 76,684.35/x
  3. Step 3: Cross multiply
    122,038.49x = 168,393.06 × 76,684.35
  4. Step 4: Simplify right side
    122,038.49x = 12,913,112,350.61
  5. Step 5: Solve for x
    x = 12,913,112,350.61/122,038.49
  6. Step 6: Final answer
    x = 105,811.80

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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.