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Finding the Fourth Proportional to 147,112.40, 220,668.60 and 84,904.40

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Solution

The fourth proportional to 147,112.40, 220,668.60 and 84,904.40 is: 127,356.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,112.40 : 220,668.60 = 84,904.40 : x
  2. Step 2: Convert to fraction form
    147,112.40/220,668.60 = 84,904.40/x
  3. Step 3: Cross multiply
    147,112.40x = 220,668.60 × 84,904.40
  4. Step 4: Simplify right side
    147,112.40x = 18,735,735,081.84
  5. Step 5: Solve for x
    x = 18,735,735,081.84/147,112.40
  6. Step 6: Final answer
    x = 127,356.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.