Home / 121,245.17-181,868.11-42,359.40

Finding the Fourth Proportional to 121,245.17, 181,868.11 and 42,359.40

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Solution

The fourth proportional to 121,245.17, 181,868.11 and 42,359.40 is: 63,539.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,245.17 : 181,868.11 = 42,359.40 : x
  2. Step 2: Convert to fraction form
    121,245.17/181,868.11 = 42,359.40/x
  3. Step 3: Cross multiply
    121,245.17x = 181,868.11 × 42,359.40
  4. Step 4: Simplify right side
    121,245.17x = 7,703,823,912.84
  5. Step 5: Solve for x
    x = 7,703,823,912.84/121,245.17
  6. Step 6: Final answer
    x = 63,539.23

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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.