Home / 207,787.40-311,681.10-83,217.80

Finding the Fourth Proportional to 207,787.40, 311,681.10 and 83,217.80

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Solution

The fourth proportional to 207,787.40, 311,681.10 and 83,217.80 is: 124,826.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,787.40 : 311,681.10 = 83,217.80 : x
  2. Step 2: Convert to fraction form
    207,787.40/311,681.10 = 83,217.80/x
  3. Step 3: Cross multiply
    207,787.40x = 311,681.10 × 83,217.80
  4. Step 4: Simplify right side
    207,787.40x = 25,937,415,443.58
  5. Step 5: Solve for x
    x = 25,937,415,443.58/207,787.40
  6. Step 6: Final answer
    x = 124,826.70

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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.