Home / 207,860.10-311,329.35-83,136.90

Finding the Fourth Proportional to 207,860.10, 311,329.35 and 83,136.90

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Solution

The fourth proportional to 207,860.10, 311,329.35 and 83,136.90 is: 124,521.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,860.10 : 311,329.35 = 83,136.90 : x
  2. Step 2: Convert to fraction form
    207,860.10/311,329.35 = 83,136.90/x
  3. Step 3: Cross multiply
    207,860.10x = 311,329.35 × 83,136.90
  4. Step 4: Simplify right side
    207,860.10x = 25,882,957,038.02
  5. Step 5: Solve for x
    x = 25,882,957,038.02/207,860.10
  6. Step 6: Final answer
    x = 124,521.05

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1.5x scale

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.