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Finding the Fourth Proportional to 185,730.48, 278,642.88 and 85,962.60

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Solution

The fourth proportional to 185,730.48, 278,642.88 and 85,962.60 is: 128,965.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,730.48 : 278,642.88 = 85,962.60 : x
  2. Step 2: Convert to fraction form
    185,730.48/278,642.88 = 85,962.60/x
  3. Step 3: Cross multiply
    185,730.48x = 278,642.88 × 85,962.60
  4. Step 4: Simplify right side
    185,730.48x = 23,952,866,436.29
  5. Step 5: Solve for x
    x = 23,952,866,436.29/185,730.48
  6. Step 6: Final answer
    x = 128,965.73

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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.