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Finding the Fourth Proportional to 164,910.70, 247,366.05 and 122,920.30

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Solution

The fourth proportional to 164,910.70, 247,366.05 and 122,920.30 is: 184,380.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    164,910.70 : 247,366.05 = 122,920.30 : x
  2. Step 2: Convert to fraction form
    164,910.70/247,366.05 = 122,920.30/x
  3. Step 3: Cross multiply
    164,910.70x = 247,366.05 × 122,920.30
  4. Step 4: Simplify right side
    164,910.70x = 30,406,309,075.82
  5. Step 5: Solve for x
    x = 30,406,309,075.82/164,910.70
  6. Step 6: Final answer
    x = 184,380.45

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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.