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Finding the Fourth Proportional to 121,229.55, 181,927.55 and 42,343.85

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Solution

The fourth proportional to 121,229.55, 181,927.55 and 42,343.85 is: 63,544.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,229.55 : 181,927.55 = 42,343.85 : x
  2. Step 2: Convert to fraction form
    121,229.55/181,927.55 = 42,343.85/x
  3. Step 3: Cross multiply
    121,229.55x = 181,927.55 × 42,343.85
  4. Step 4: Simplify right side
    121,229.55x = 7,703,512,888.07
  5. Step 5: Solve for x
    x = 7,703,512,888.07/121,229.55
  6. Step 6: Final answer
    x = 63,544.84

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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.