Home / 208,123.10-311,681.63-119,106.74

Finding the Fourth Proportional to 208,123.10, 311,681.63 and 119,106.74

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Solution

The fourth proportional to 208,123.10, 311,681.63 and 119,106.74 is: 178,372.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,123.10 : 311,681.63 = 119,106.74 : x
  2. Step 2: Convert to fraction form
    208,123.10/311,681.63 = 119,106.74/x
  3. Step 3: Cross multiply
    208,123.10x = 311,681.63 × 119,106.74
  4. Step 4: Simplify right side
    208,123.10x = 37,123,380,713.24
  5. Step 5: Solve for x
    x = 37,123,380,713.24/208,123.10
  6. Step 6: Final answer
    x = 178,372.23

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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.