Home / 151,384.83-208,901.07-90,919.55

Finding the Fourth Proportional to 151,384.83, 208,901.07 and 90,919.55

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Solution

The fourth proportional to 151,384.83, 208,901.07 and 90,919.55 is: 125,462.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,384.83 : 208,901.07 = 90,919.55 : x
  2. Step 2: Convert to fraction form
    151,384.83/208,901.07 = 90,919.55/x
  3. Step 3: Cross multiply
    151,384.83x = 208,901.07 × 90,919.55
  4. Step 4: Simplify right side
    151,384.83x = 18,993,190,234.41
  5. Step 5: Solve for x
    x = 18,993,190,234.41/151,384.83
  6. Step 6: Final answer
    x = 125,462.97

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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.