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Finding the Fourth Proportional to 116,378.90, 160,603.07 and 66,077.90

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Solution

The fourth proportional to 116,378.90, 160,603.07 and 66,077.90 is: 91,187.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,378.90 : 160,603.07 = 66,077.90 : x
  2. Step 2: Convert to fraction form
    116,378.90/160,603.07 = 66,077.90/x
  3. Step 3: Cross multiply
    116,378.90x = 160,603.07 × 66,077.90
  4. Step 4: Simplify right side
    116,378.90x = 10,612,313,599.15
  5. Step 5: Solve for x
    x = 10,612,313,599.15/116,378.90
  6. Step 6: Final answer
    x = 91,187.61

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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.