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Finding the Fourth Proportional to 185,239.65, 255,630.98 and 100,356.71

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Solution

The fourth proportional to 185,239.65, 255,630.98 and 100,356.71 is: 138,492.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,239.65 : 255,630.98 = 100,356.71 : x
  2. Step 2: Convert to fraction form
    185,239.65/255,630.98 = 100,356.71/x
  3. Step 3: Cross multiply
    185,239.65x = 255,630.98 × 100,356.71
  4. Step 4: Simplify right side
    185,239.65x = 25,654,283,487.80
  5. Step 5: Solve for x
    x = 25,654,283,487.80/185,239.65
  6. Step 6: Final answer
    x = 138,492.40

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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.