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Finding the Fourth Proportional to 117,211.10, 161,621.03 and 84,881.77

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Solution

The fourth proportional to 117,211.10, 161,621.03 and 84,881.77 is: 117,042.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,211.10 : 161,621.03 = 84,881.77 : x
  2. Step 2: Convert to fraction form
    117,211.10/161,621.03 = 84,881.77/x
  3. Step 3: Cross multiply
    117,211.10x = 161,621.03 × 84,881.77
  4. Step 4: Simplify right side
    117,211.10x = 13,718,678,903.77
  5. Step 5: Solve for x
    x = 13,718,678,903.77/117,211.10
  6. Step 6: Final answer
    x = 117,042.49

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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.