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Finding the Fourth Proportional to 118,178.54, 163,146.60 and 91,260.62

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Solution

The fourth proportional to 118,178.54, 163,146.60 and 91,260.62 is: 125,986.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,178.54 : 163,146.60 = 91,260.62 : x
  2. Step 2: Convert to fraction form
    118,178.54/163,146.60 = 91,260.62/x
  3. Step 3: Cross multiply
    118,178.54x = 163,146.60 × 91,260.62
  4. Step 4: Simplify right side
    118,178.54x = 14,888,859,051.16
  5. Step 5: Solve for x
    x = 14,888,859,051.16/118,178.54
  6. Step 6: Final answer
    x = 125,986.15

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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.