Home / 129,723.48-179,018.64-73,134.72

Finding the Fourth Proportional to 129,723.48, 179,018.64 and 73,134.72

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Solution

The fourth proportional to 129,723.48, 179,018.64 and 73,134.72 is: 100,926.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,723.48 : 179,018.64 = 73,134.72 : x
  2. Step 2: Convert to fraction form
    129,723.48/179,018.64 = 73,134.72/x
  3. Step 3: Cross multiply
    129,723.48x = 179,018.64 × 73,134.72
  4. Step 4: Simplify right side
    129,723.48x = 13,092,478,111.18
  5. Step 5: Solve for x
    x = 13,092,478,111.18/129,723.48
  6. Step 6: Final answer
    x = 100,926.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.