Home / 131,418.86-181,358.12-70,989.52

Finding the Fourth Proportional to 131,418.86, 181,358.12 and 70,989.52

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Solution

The fourth proportional to 131,418.86, 181,358.12 and 70,989.52 is: 97,965.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,418.86 : 181,358.12 = 70,989.52 : x
  2. Step 2: Convert to fraction form
    131,418.86/181,358.12 = 70,989.52/x
  3. Step 3: Cross multiply
    131,418.86x = 181,358.12 × 70,989.52
  4. Step 4: Simplify right side
    131,418.86x = 12,874,525,886.90
  5. Step 5: Solve for x
    x = 12,874,525,886.90/131,418.86
  6. Step 6: Final answer
    x = 97,965.59

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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.