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Finding the Fourth Proportional to 121,521.69, 182,282.54 and 38,415.69

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Solution

The fourth proportional to 121,521.69, 182,282.54 and 38,415.69 is: 57,623.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,521.69 : 182,282.54 = 38,415.69 : x
  2. Step 2: Convert to fraction form
    121,521.69/182,282.54 = 38,415.69/x
  3. Step 3: Cross multiply
    121,521.69x = 182,282.54 × 38,415.69
  4. Step 4: Simplify right side
    121,521.69x = 7,002,509,549.05
  5. Step 5: Solve for x
    x = 7,002,509,549.05/121,521.69
  6. Step 6: Final answer
    x = 57,623.54

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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.