Home / 185,638.85-278,413.66-85,703.05

Finding the Fourth Proportional to 185,638.85, 278,413.66 and 85,703.05

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Solution

The fourth proportional to 185,638.85, 278,413.66 and 85,703.05 is: 128,533.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,638.85 : 278,413.66 = 85,703.05 : x
  2. Step 2: Convert to fraction form
    185,638.85/278,413.66 = 85,703.05/x
  3. Step 3: Cross multiply
    185,638.85x = 278,413.66 × 85,703.05
  4. Step 4: Simplify right side
    185,638.85x = 23,860,900,278.81
  5. Step 5: Solve for x
    x = 23,860,900,278.81/185,638.85
  6. Step 6: Final answer
    x = 128,533.98

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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.