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Finding the Fourth Proportional to 144,675.80, 217,013.70 and 121,347.80

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Solution

The fourth proportional to 144,675.80, 217,013.70 and 121,347.80 is: 182,021.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,675.80 : 217,013.70 = 121,347.80 : x
  2. Step 2: Convert to fraction form
    144,675.80/217,013.70 = 121,347.80/x
  3. Step 3: Cross multiply
    144,675.80x = 217,013.70 × 121,347.80
  4. Step 4: Simplify right side
    144,675.80x = 26,334,135,064.86
  5. Step 5: Solve for x
    x = 26,334,135,064.86/144,675.80
  6. Step 6: Final answer
    x = 182,021.70

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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.