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Finding the Fourth Proportional to 144,089.92, 216,145.28 and 55,343.44

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Solution

The fourth proportional to 144,089.92, 216,145.28 and 55,343.44 is: 83,019.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,089.92 : 216,145.28 = 55,343.44 : x
  2. Step 2: Convert to fraction form
    144,089.92/216,145.28 = 55,343.44/x
  3. Step 3: Cross multiply
    144,089.92x = 216,145.28 × 55,343.44
  4. Step 4: Simplify right side
    144,089.92x = 11,962,223,334.96
  5. Step 5: Solve for x
    x = 11,962,223,334.96/144,089.92
  6. Step 6: Final answer
    x = 83,019.15

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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.