Home / 131,926.40-182,068.80-81,641.60

Finding the Fourth Proportional to 131,926.40, 182,068.80 and 81,641.60

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Solution

The fourth proportional to 131,926.40, 182,068.80 and 81,641.60 is: 112,671.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,926.40 : 182,068.80 = 81,641.60 : x
  2. Step 2: Convert to fraction form
    131,926.40/182,068.80 = 81,641.60/x
  3. Step 3: Cross multiply
    131,926.40x = 182,068.80 × 81,641.60
  4. Step 4: Simplify right side
    131,926.40x = 14,864,388,142.08
  5. Step 5: Solve for x
    x = 14,864,388,142.08/131,926.40
  6. Step 6: Final answer
    x = 112,671.82

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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.