Home / 121,058.62-181,588.84-42,172.72

Finding the Fourth Proportional to 121,058.62, 181,588.84 and 42,172.72

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Solution

The fourth proportional to 121,058.62, 181,588.84 and 42,172.72 is: 63,259.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,058.62 : 181,588.84 = 42,172.72 : x
  2. Step 2: Convert to fraction form
    121,058.62/181,588.84 = 42,172.72/x
  3. Step 3: Cross multiply
    121,058.62x = 181,588.84 × 42,172.72
  4. Step 4: Simplify right side
    121,058.62x = 7,658,094,745.04
  5. Step 5: Solve for x
    x = 7,658,094,745.04/121,058.62
  6. Step 6: Final answer
    x = 63,259.39

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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.