Home / 121,264.89-181,975.16-81,328.96

Finding the Fourth Proportional to 121,264.89, 181,975.16 and 81,328.96

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Solution

The fourth proportional to 121,264.89, 181,975.16 and 81,328.96 is: 122,045.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,264.89 : 181,975.16 = 81,328.96 : x
  2. Step 2: Convert to fraction form
    121,264.89/181,975.16 = 81,328.96/x
  3. Step 3: Cross multiply
    121,264.89x = 181,975.16 × 81,328.96
  4. Step 4: Simplify right side
    121,264.89x = 14,799,850,508.63
  5. Step 5: Solve for x
    x = 14,799,850,508.63/121,264.89
  6. Step 6: Final answer
    x = 122,045.64

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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.