Home / 102,075.90-140,872.59-56,757.66

Finding the Fourth Proportional to 102,075.90, 140,872.59 and 56,757.66

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Solution

The fourth proportional to 102,075.90, 140,872.59 and 56,757.66 is: 78,329.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,075.90 : 140,872.59 = 56,757.66 : x
  2. Step 2: Convert to fraction form
    102,075.90/140,872.59 = 56,757.66/x
  3. Step 3: Cross multiply
    102,075.90x = 140,872.59 × 56,757.66
  4. Step 4: Simplify right side
    102,075.90x = 7,995,598,566.54
  5. Step 5: Solve for x
    x = 7,995,598,566.54/102,075.90
  6. Step 6: Final answer
    x = 78,329.93

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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.