Home / 185,801.16-256,405.68-100,920

Finding the Fourth Proportional to 185,801.16, 256,405.68 and 100,920

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Solution

The fourth proportional to 185,801.16, 256,405.68 and 100,920 is: 139,269.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,801.16 : 256,405.68 = 100,920 : x
  2. Step 2: Convert to fraction form
    185,801.16/256,405.68 = 100,920/x
  3. Step 3: Cross multiply
    185,801.16x = 256,405.68 × 100,920
  4. Step 4: Simplify right side
    185,801.16x = 25,876,461,225.60
  5. Step 5: Solve for x
    x = 25,876,461,225.60/185,801.16
  6. Step 6: Final answer
    x = 139,269.64

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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.