Home / 121,109.04-181,437.57-87,747.57

Finding the Fourth Proportional to 121,109.04, 181,437.57 and 87,747.57

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Solution

The fourth proportional to 121,109.04, 181,437.57 and 87,747.57 is: 131,457.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,109.04 : 181,437.57 = 87,747.57 : x
  2. Step 2: Convert to fraction form
    121,109.04/181,437.57 = 87,747.57/x
  3. Step 3: Cross multiply
    121,109.04x = 181,437.57 × 87,747.57
  4. Step 4: Simplify right side
    121,109.04x = 15,920,705,874.20
  5. Step 5: Solve for x
    x = 15,920,705,874.20/121,109.04
  6. Step 6: Final answer
    x = 131,457.62

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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.