Home / 453,539.80-680,408.10-137,988.50

Finding the Fourth Proportional to 453,539.80, 680,408.10 and 137,988.50

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Solution

The fourth proportional to 453,539.80, 680,408.10 and 137,988.50 is: 207,012.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,539.80 : 680,408.10 = 137,988.50 : x
  2. Step 2: Convert to fraction form
    453,539.80/680,408.10 = 137,988.50/x
  3. Step 3: Cross multiply
    453,539.80x = 680,408.10 × 137,988.50
  4. Step 4: Simplify right side
    453,539.80x = 93,888,493,106.85
  5. Step 5: Solve for x
    x = 93,888,493,106.85/453,539.80
  6. Step 6: Final answer
    x = 207,012.69

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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.