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Finding the Fourth Proportional to 185,718.78, 256,350.18 and 118,650.78

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Solution

The fourth proportional to 185,718.78, 256,350.18 and 118,650.78 is: 163,775.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,718.78 : 256,350.18 = 118,650.78 : x
  2. Step 2: Convert to fraction form
    185,718.78/256,350.18 = 118,650.78/x
  3. Step 3: Cross multiply
    185,718.78x = 256,350.18 × 118,650.78
  4. Step 4: Simplify right side
    185,718.78x = 30,416,148,810.14
  5. Step 5: Solve for x
    x = 30,416,148,810.14/185,718.78
  6. Step 6: Final answer
    x = 163,775.30

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1.5x scale

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.