Home / 127,413.12-175,784.64-87,600

Finding the Fourth Proportional to 127,413.12, 175,784.64 and 87,600

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Solution

The fourth proportional to 127,413.12, 175,784.64 and 87,600 is: 120,856.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,413.12 : 175,784.64 = 87,600 : x
  2. Step 2: Convert to fraction form
    127,413.12/175,784.64 = 87,600/x
  3. Step 3: Cross multiply
    127,413.12x = 175,784.64 × 87,600
  4. Step 4: Simplify right side
    127,413.12x = 15,398,734,464.00
  5. Step 5: Solve for x
    x = 15,398,734,464.00/127,413.12
  6. Step 6: Final answer
    x = 120,856.74

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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.