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Finding the Fourth Proportional to 144,498.30, 216,747.45 and 121,170.30

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Solution

The fourth proportional to 144,498.30, 216,747.45 and 121,170.30 is: 181,755.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,498.30 : 216,747.45 = 121,170.30 : x
  2. Step 2: Convert to fraction form
    144,498.30/216,747.45 = 121,170.30/x
  3. Step 3: Cross multiply
    144,498.30x = 216,747.45 × 121,170.30
  4. Step 4: Simplify right side
    144,498.30x = 26,263,353,540.74
  5. Step 5: Solve for x
    x = 26,263,353,540.74/144,498.30
  6. Step 6: Final answer
    x = 181,755.45

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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.