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Finding the Fourth Proportional to 121,999.32, 183,061.62 and 92,407.32

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Solution

The fourth proportional to 121,999.32, 183,061.62 and 92,407.32 is: 138,658.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,999.32 : 183,061.62 = 92,407.32 : x
  2. Step 2: Convert to fraction form
    121,999.32/183,061.62 = 92,407.32/x
  3. Step 3: Cross multiply
    121,999.32x = 183,061.62 × 92,407.32
  4. Step 4: Simplify right side
    121,999.32x = 16,916,233,699.06
  5. Step 5: Solve for x
    x = 16,916,233,699.06/121,999.32
  6. Step 6: Final answer
    x = 138,658.43

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1.5x scale

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.