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Finding the Fourth Proportional to 142,995.54, 197,357.46 and 79,353.84

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Solution

The fourth proportional to 142,995.54, 197,357.46 and 79,353.84 is: 109,521.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,995.54 : 197,357.46 = 79,353.84 : x
  2. Step 2: Convert to fraction form
    142,995.54/197,357.46 = 79,353.84/x
  3. Step 3: Cross multiply
    142,995.54x = 197,357.46 × 79,353.84
  4. Step 4: Simplify right side
    142,995.54x = 15,661,072,303.65
  5. Step 5: Solve for x
    x = 15,661,072,303.65/142,995.54
  6. Step 6: Final answer
    x = 109,521.40

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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.