Home / 185,638.29-278,412.82-85,702.49

Finding the Fourth Proportional to 185,638.29, 278,412.82 and 85,702.49

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Solution

The fourth proportional to 185,638.29, 278,412.82 and 85,702.49 is: 128,533.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,638.29 : 278,412.82 = 85,702.49 : x
  2. Step 2: Convert to fraction form
    185,638.29/278,412.82 = 85,702.49/x
  3. Step 3: Cross multiply
    185,638.29x = 278,412.82 × 85,702.49
  4. Step 4: Simplify right side
    185,638.29x = 23,860,671,359.65
  5. Step 5: Solve for x
    x = 23,860,671,359.65/185,638.29
  6. Step 6: Final answer
    x = 128,533.14

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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.