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Finding the Fourth Proportional to 119,075.57, 178,604.39 and 55,909.54

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Solution

The fourth proportional to 119,075.57, 178,604.39 and 55,909.54 is: 83,860.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,075.57 : 178,604.39 = 55,909.54 : x
  2. Step 2: Convert to fraction form
    119,075.57/178,604.39 = 55,909.54/x
  3. Step 3: Cross multiply
    119,075.57x = 178,604.39 × 55,909.54
  4. Step 4: Simplify right side
    119,075.57x = 9,985,689,649.91
  5. Step 5: Solve for x
    x = 9,985,689,649.91/119,075.57
  6. Step 6: Final answer
    x = 83,860.10

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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.