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Finding the Fourth Proportional to 144,071.60, 216,204.60 and 84,844.40

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Solution

The fourth proportional to 144,071.60, 216,204.60 and 84,844.40 is: 127,323.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,071.60 : 216,204.60 = 84,844.40 : x
  2. Step 2: Convert to fraction form
    144,071.60/216,204.60 = 84,844.40/x
  3. Step 3: Cross multiply
    144,071.60x = 216,204.60 × 84,844.40
  4. Step 4: Simplify right side
    144,071.60x = 18,343,749,564.24
  5. Step 5: Solve for x
    x = 18,343,749,564.24/144,071.60
  6. Step 6: Final answer
    x = 127,323.84

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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.