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Finding the Fourth Proportional to 141,201.70, 211,802.55 and 121,518.70

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Solution

The fourth proportional to 141,201.70, 211,802.55 and 121,518.70 is: 182,278.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,201.70 : 211,802.55 = 121,518.70 : x
  2. Step 2: Convert to fraction form
    141,201.70/211,802.55 = 121,518.70/x
  3. Step 3: Cross multiply
    141,201.70x = 211,802.55 × 121,518.70
  4. Step 4: Simplify right side
    141,201.70x = 25,737,970,532.69
  5. Step 5: Solve for x
    x = 25,737,970,532.69/141,201.70
  6. Step 6: Final answer
    x = 182,278.05

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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.