Home / 122,653.64-169,266.81-68,938.49

Finding the Fourth Proportional to 122,653.64, 169,266.81 and 68,938.49

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Solution

The fourth proportional to 122,653.64, 169,266.81 and 68,938.49 is: 95,137.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,653.64 : 169,266.81 = 68,938.49 : x
  2. Step 2: Convert to fraction form
    122,653.64/169,266.81 = 68,938.49/x
  3. Step 3: Cross multiply
    122,653.64x = 169,266.81 × 68,938.49
  4. Step 4: Simplify right side
    122,653.64x = 11,668,998,970.20
  5. Step 5: Solve for x
    x = 11,668,998,970.20/122,653.64
  6. Step 6: Final answer
    x = 95,137.81

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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.