Home / 121,095.28-181,644-42,209.44

Finding the Fourth Proportional to 121,095.28, 181,644 and 42,209.44

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Solution

The fourth proportional to 121,095.28, 181,644 and 42,209.44 is: 63,314.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,095.28 : 181,644 = 42,209.44 : x
  2. Step 2: Convert to fraction form
    121,095.28/181,644 = 42,209.44/x
  3. Step 3: Cross multiply
    121,095.28x = 181,644 × 42,209.44
  4. Step 4: Simplify right side
    121,095.28x = 7,667,091,519.36
  5. Step 5: Solve for x
    x = 7,667,091,519.36/121,095.28
  6. Step 6: Final answer
    x = 63,314.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.