Home / 150,931.92-208,311.84-87,308.40

Finding the Fourth Proportional to 150,931.92, 208,311.84 and 87,308.40

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Solution

The fourth proportional to 150,931.92, 208,311.84 and 87,308.40 is: 120,500.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,931.92 : 208,311.84 = 87,308.40 : x
  2. Step 2: Convert to fraction form
    150,931.92/208,311.84 = 87,308.40/x
  3. Step 3: Cross multiply
    150,931.92x = 208,311.84 × 87,308.40
  4. Step 4: Simplify right side
    150,931.92x = 18,187,373,451.46
  5. Step 5: Solve for x
    x = 18,187,373,451.46/150,931.92
  6. Step 6: Final answer
    x = 120,500.51

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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.