Home / 132,696.40-183,136.16-78,981.60

Finding the Fourth Proportional to 132,696.40, 183,136.16 and 78,981.60

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Solution

The fourth proportional to 132,696.40, 183,136.16 and 78,981.60 is: 109,003.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,696.40 : 183,136.16 = 78,981.60 : x
  2. Step 2: Convert to fraction form
    132,696.40/183,136.16 = 78,981.60/x
  3. Step 3: Cross multiply
    132,696.40x = 183,136.16 × 78,981.60
  4. Step 4: Simplify right side
    132,696.40x = 14,464,386,934.66
  5. Step 5: Solve for x
    x = 14,464,386,934.66/132,696.40
  6. Step 6: Final answer
    x = 109,003.61

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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.