Home / 116,346.45-160,558-66,045.45

Finding the Fourth Proportional to 116,346.45, 160,558 and 66,045.45

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Solution

The fourth proportional to 116,346.45, 160,558 and 66,045.45 is: 91,142.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,346.45 : 160,558 = 66,045.45 : x
  2. Step 2: Convert to fraction form
    116,346.45/160,558 = 66,045.45/x
  3. Step 3: Cross multiply
    116,346.45x = 160,558 × 66,045.45
  4. Step 4: Simplify right side
    116,346.45x = 10,604,125,361.10
  5. Step 5: Solve for x
    x = 10,604,125,361.10/116,346.45
  6. Step 6: Final answer
    x = 91,142.66

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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.