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Finding the Fourth Proportional to 128,607.34, 177,524.67 and 104,692.50

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Solution

The fourth proportional to 128,607.34, 177,524.67 and 104,692.50 is: 144,513.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,607.34 : 177,524.67 = 104,692.50 : x
  2. Step 2: Convert to fraction form
    128,607.34/177,524.67 = 104,692.50/x
  3. Step 3: Cross multiply
    128,607.34x = 177,524.67 × 104,692.50
  4. Step 4: Simplify right side
    128,607.34x = 18,585,501,513.98
  5. Step 5: Solve for x
    x = 18,585,501,513.98/128,607.34
  6. Step 6: Final answer
    x = 144,513.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.