Home / 122,013.90-168,329.52-76,677.36

Finding the Fourth Proportional to 122,013.90, 168,329.52 and 76,677.36

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Solution

The fourth proportional to 122,013.90, 168,329.52 and 76,677.36 is: 105,783.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,013.90 : 168,329.52 = 76,677.36 : x
  2. Step 2: Convert to fraction form
    122,013.90/168,329.52 = 76,677.36/x
  3. Step 3: Cross multiply
    122,013.90x = 168,329.52 × 76,677.36
  4. Step 4: Simplify right side
    122,013.90x = 12,907,063,203.67
  5. Step 5: Solve for x
    x = 12,907,063,203.67/122,013.90
  6. Step 6: Final answer
    x = 105,783.55

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1.5x scale

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.