Home / 144,905.15-217,420.30-78,392.14

Finding the Fourth Proportional to 144,905.15, 217,420.30 and 78,392.14

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Solution

The fourth proportional to 144,905.15, 217,420.30 and 78,392.14 is: 117,622.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,905.15 : 217,420.30 = 78,392.14 : x
  2. Step 2: Convert to fraction form
    144,905.15/217,420.30 = 78,392.14/x
  3. Step 3: Cross multiply
    144,905.15x = 217,420.30 × 78,392.14
  4. Step 4: Simplify right side
    144,905.15x = 17,044,042,150.88
  5. Step 5: Solve for x
    x = 17,044,042,150.88/144,905.15
  6. Step 6: Final answer
    x = 117,622.06

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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.