Home / 131,578.43-181,578.10-71,148.93

Finding the Fourth Proportional to 131,578.43, 181,578.10 and 71,148.93

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Solution

The fourth proportional to 131,578.43, 181,578.10 and 71,148.93 is: 98,185.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,578.43 : 181,578.10 = 71,148.93 : x
  2. Step 2: Convert to fraction form
    131,578.43/181,578.10 = 71,148.93/x
  3. Step 3: Cross multiply
    131,578.43x = 181,578.10 × 71,148.93
  4. Step 4: Simplify right side
    131,578.43x = 12,919,087,526.43
  5. Step 5: Solve for x
    x = 12,919,087,526.43/131,578.43
  6. Step 6: Final answer
    x = 98,185.45

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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.