Home / 142,995.93-197,338.02-78,467.94

Finding the Fourth Proportional to 142,995.93, 197,338.02 and 78,467.94

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Solution

The fourth proportional to 142,995.93, 197,338.02 and 78,467.94 is: 108,287.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,995.93 : 197,338.02 = 78,467.94 : x
  2. Step 2: Convert to fraction form
    142,995.93/197,338.02 = 78,467.94/x
  3. Step 3: Cross multiply
    142,995.93x = 197,338.02 × 78,467.94
  4. Step 4: Simplify right side
    142,995.93x = 15,484,707,913.08
  5. Step 5: Solve for x
    x = 15,484,707,913.08/142,995.93
  6. Step 6: Final answer
    x = 108,287.75

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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.