Home / 161,543.35-242,315.09-72,693.07

Finding the Fourth Proportional to 161,543.35, 242,315.09 and 72,693.07

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Solution

The fourth proportional to 161,543.35, 242,315.09 and 72,693.07 is: 109,039.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,543.35 : 242,315.09 = 72,693.07 : x
  2. Step 2: Convert to fraction form
    161,543.35/242,315.09 = 72,693.07/x
  3. Step 3: Cross multiply
    161,543.35x = 242,315.09 × 72,693.07
  4. Step 4: Simplify right side
    161,543.35x = 17,614,627,799.43
  5. Step 5: Solve for x
    x = 17,614,627,799.43/161,543.35
  6. Step 6: Final answer
    x = 109,039.63

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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.