Home / 121,006.10-181,703.55-91,457.30

Finding the Fourth Proportional to 121,006.10, 181,703.55 and 91,457.30

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Solution

The fourth proportional to 121,006.10, 181,703.55 and 91,457.30 is: 137,332.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,006.10 : 181,703.55 = 91,457.30 : x
  2. Step 2: Convert to fraction form
    121,006.10/181,703.55 = 91,457.30/x
  3. Step 3: Cross multiply
    121,006.10x = 181,703.55 × 91,457.30
  4. Step 4: Simplify right side
    121,006.10x = 16,618,116,083.42
  5. Step 5: Solve for x
    x = 16,618,116,083.42/121,006.10
  6. Step 6: Final answer
    x = 137,332.88

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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.