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Finding the Fourth Proportional to 144,290.64, 199,017.76 and 101,279.76

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Solution

The fourth proportional to 144,290.64, 199,017.76 and 101,279.76 is: 139,693.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,290.64 : 199,017.76 = 101,279.76 : x
  2. Step 2: Convert to fraction form
    144,290.64/199,017.76 = 101,279.76/x
  3. Step 3: Cross multiply
    144,290.64x = 199,017.76 × 101,279.76
  4. Step 4: Simplify right side
    144,290.64x = 20,156,470,968.54
  5. Step 5: Solve for x
    x = 20,156,470,968.54/144,290.64
  6. Step 6: Final answer
    x = 139,693.54

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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.