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Finding the Fourth Proportional to 150,845.84, 208,155.12 and 87,187.76

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Solution

The fourth proportional to 150,845.84, 208,155.12 and 87,187.76 is: 120,312.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,845.84 : 208,155.12 = 87,187.76 : x
  2. Step 2: Convert to fraction form
    150,845.84/208,155.12 = 87,187.76/x
  3. Step 3: Cross multiply
    150,845.84x = 208,155.12 × 87,187.76
  4. Step 4: Simplify right side
    150,845.84x = 18,148,578,645.33
  5. Step 5: Solve for x
    x = 18,148,578,645.33/150,845.84
  6. Step 6: Final answer
    x = 120,312.09

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1.5x scale

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.