Home / 122,777.49-169,456.19-76,858.50

Finding the Fourth Proportional to 122,777.49, 169,456.19 and 76,858.50

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Solution

The fourth proportional to 122,777.49, 169,456.19 and 76,858.50 is: 106,079.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,777.49 : 169,456.19 = 76,858.50 : x
  2. Step 2: Convert to fraction form
    122,777.49/169,456.19 = 76,858.50/x
  3. Step 3: Cross multiply
    122,777.49x = 169,456.19 × 76,858.50
  4. Step 4: Simplify right side
    122,777.49x = 13,024,148,830.28
  5. Step 5: Solve for x
    x = 13,024,148,830.28/122,777.49
  6. Step 6: Final answer
    x = 106,079.29

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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.