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Finding the Fourth Proportional to 150,879.67, 208,206.47 and 90,438.57

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Solution

The fourth proportional to 150,879.67, 208,206.47 and 90,438.57 is: 124,800.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,879.67 : 208,206.47 = 90,438.57 : x
  2. Step 2: Convert to fraction form
    150,879.67/208,206.47 = 90,438.57/x
  3. Step 3: Cross multiply
    150,879.67x = 208,206.47 × 90,438.57
  4. Step 4: Simplify right side
    150,879.67x = 18,829,895,637.64
  5. Step 5: Solve for x
    x = 18,829,895,637.64/150,879.67
  6. Step 6: Final answer
    x = 124,800.75

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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.