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Finding the Fourth Proportional to 143,036.64, 197,384.58 and 79,370.64

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Solution

The fourth proportional to 143,036.64, 197,384.58 and 79,370.64 is: 109,528.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,036.64 : 197,384.58 = 79,370.64 : x
  2. Step 2: Convert to fraction form
    143,036.64/197,384.58 = 79,370.64/x
  3. Step 3: Cross multiply
    143,036.64x = 197,384.58 × 79,370.64
  4. Step 4: Simplify right side
    143,036.64x = 15,666,540,440.73
  5. Step 5: Solve for x
    x = 15,666,540,440.73/143,036.64
  6. Step 6: Final answer
    x = 109,528.16

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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.