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Finding the Fourth Proportional to 144,612.90, 216,919.35 and 141,660.45

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Solution

The fourth proportional to 144,612.90, 216,919.35 and 141,660.45 is: 212,490.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,612.90 : 216,919.35 = 141,660.45 : x
  2. Step 2: Convert to fraction form
    144,612.90/216,919.35 = 141,660.45/x
  3. Step 3: Cross multiply
    144,612.90x = 216,919.35 × 141,660.45
  4. Step 4: Simplify right side
    144,612.90x = 30,728,892,734.71
  5. Step 5: Solve for x
    x = 30,728,892,734.71/144,612.90
  6. Step 6: Final answer
    x = 212,490.68

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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.