Home / 131,911.46-182,065.32-121,284.26

Finding the Fourth Proportional to 131,911.46, 182,065.32 and 121,284.26

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Solution

The fourth proportional to 131,911.46, 182,065.32 and 121,284.26 is: 167,397.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,911.46 : 182,065.32 = 121,284.26 : x
  2. Step 2: Convert to fraction form
    131,911.46/182,065.32 = 121,284.26/x
  3. Step 3: Cross multiply
    131,911.46x = 182,065.32 × 121,284.26
  4. Step 4: Simplify right side
    131,911.46x = 22,081,657,607.86
  5. Step 5: Solve for x
    x = 22,081,657,607.86/131,911.46
  6. Step 6: Final answer
    x = 167,397.57

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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.