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Finding the Fourth Proportional to 185,748.54, 278,669.88 and 85,980.54

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Solution

The fourth proportional to 185,748.54, 278,669.88 and 85,980.54 is: 128,992.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,748.54 : 278,669.88 = 85,980.54 : x
  2. Step 2: Convert to fraction form
    185,748.54/278,669.88 = 85,980.54/x
  3. Step 3: Cross multiply
    185,748.54x = 278,669.88 × 85,980.54
  4. Step 4: Simplify right side
    185,748.54x = 23,960,186,764.14
  5. Step 5: Solve for x
    x = 23,960,186,764.14/185,748.54
  6. Step 6: Final answer
    x = 128,992.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.