Home / 126,413.10-189,620.40-42,173.06

Finding the Fourth Proportional to 126,413.10, 189,620.40 and 42,173.06

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Solution

The fourth proportional to 126,413.10, 189,620.40 and 42,173.06 is: 63,259.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,413.10 : 189,620.40 = 42,173.06 : x
  2. Step 2: Convert to fraction form
    126,413.10/189,620.40 = 42,173.06/x
  3. Step 3: Cross multiply
    126,413.10x = 189,620.40 × 42,173.06
  4. Step 4: Simplify right side
    126,413.10x = 7,996,872,506.42
  5. Step 5: Solve for x
    x = 7,996,872,506.42/126,413.10
  6. Step 6: Final answer
    x = 63,259.84

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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.