Home / 121,331.72-181,732.41-100,032.47

Finding the Fourth Proportional to 121,331.72, 181,732.41 and 100,032.47

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Solution

The fourth proportional to 121,331.72, 181,732.41 and 100,032.47 is: 149,830.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,331.72 : 181,732.41 = 100,032.47 : x
  2. Step 2: Convert to fraction form
    121,331.72/181,732.41 = 100,032.47/x
  3. Step 3: Cross multiply
    121,331.72x = 181,732.41 × 100,032.47
  4. Step 4: Simplify right side
    121,331.72x = 18,179,141,624.19
  5. Step 5: Solve for x
    x = 18,179,141,624.19/121,331.72
  6. Step 6: Final answer
    x = 149,830.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.