Home / 150,931.72-208,240.31-90,480.31

Finding the Fourth Proportional to 150,931.72, 208,240.31 and 90,480.31

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Solution

The fourth proportional to 150,931.72, 208,240.31 and 90,480.31 is: 124,835.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,931.72 : 208,240.31 = 90,480.31 : x
  2. Step 2: Convert to fraction form
    150,931.72/208,240.31 = 90,480.31/x
  3. Step 3: Cross multiply
    150,931.72x = 208,240.31 × 90,480.31
  4. Step 4: Simplify right side
    150,931.72x = 18,841,646,309.69
  5. Step 5: Solve for x
    x = 18,841,646,309.69/150,931.72
  6. Step 6: Final answer
    x = 124,835.56

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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.