Home / 122,981.57-169,719.81-68,533.80

Finding the Fourth Proportional to 122,981.57, 169,719.81 and 68,533.80

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Solution

The fourth proportional to 122,981.57, 169,719.81 and 68,533.80 is: 94,579.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,981.57 : 169,719.81 = 68,533.80 : x
  2. Step 2: Convert to fraction form
    122,981.57/169,719.81 = 68,533.80/x
  3. Step 3: Cross multiply
    122,981.57x = 169,719.81 × 68,533.80
  4. Step 4: Simplify right side
    122,981.57x = 11,631,543,514.58
  5. Step 5: Solve for x
    x = 11,631,543,514.58/122,981.57
  6. Step 6: Final answer
    x = 94,579.57

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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.