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Finding the Fourth Proportional to 117,158.55, 161,679.02 and 69,435.51

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Solution

The fourth proportional to 117,158.55, 161,679.02 and 69,435.51 is: 95,821.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,158.55 : 161,679.02 = 69,435.51 : x
  2. Step 2: Convert to fraction form
    117,158.55/161,679.02 = 69,435.51/x
  3. Step 3: Cross multiply
    117,158.55x = 161,679.02 × 69,435.51
  4. Step 4: Simplify right side
    117,158.55x = 11,226,264,862.82
  5. Step 5: Solve for x
    x = 11,226,264,862.82/117,158.55
  6. Step 6: Final answer
    x = 95,821.13

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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.