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Finding the Fourth Proportional to 144,319.64, 199,143.81 and 79,780.14

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Solution

The fourth proportional to 144,319.64, 199,143.81 and 79,780.14 is: 110,087.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,319.64 : 199,143.81 = 79,780.14 : x
  2. Step 2: Convert to fraction form
    144,319.64/199,143.81 = 79,780.14/x
  3. Step 3: Cross multiply
    144,319.64x = 199,143.81 × 79,780.14
  4. Step 4: Simplify right side
    144,319.64x = 15,887,721,041.93
  5. Step 5: Solve for x
    x = 15,887,721,041.93/144,319.64
  6. Step 6: Final answer
    x = 110,087.04

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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.