Home / 121,093.30-181,640.98-42,207.40

Finding the Fourth Proportional to 121,093.30, 181,640.98 and 42,207.40

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Solution

The fourth proportional to 121,093.30, 181,640.98 and 42,207.40 is: 63,311.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,093.30 : 181,640.98 = 42,207.40 : x
  2. Step 2: Convert to fraction form
    121,093.30/181,640.98 = 42,207.40/x
  3. Step 3: Cross multiply
    121,093.30x = 181,640.98 × 42,207.40
  4. Step 4: Simplify right side
    121,093.30x = 7,666,593,499.25
  5. Step 5: Solve for x
    x = 7,666,593,499.25/121,093.30
  6. Step 6: Final answer
    x = 63,311.46

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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.