Home / 86,942.10-130,413.15-81,066.90

Finding the Fourth Proportional to 86,942.10, 130,413.15 and 81,066.90

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Solution

The fourth proportional to 86,942.10, 130,413.15 and 81,066.90 is: 121,600.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,942.10 : 130,413.15 = 81,066.90 : x
  2. Step 2: Convert to fraction form
    86,942.10/130,413.15 = 81,066.90/x
  3. Step 3: Cross multiply
    86,942.10x = 130,413.15 × 81,066.90
  4. Step 4: Simplify right side
    86,942.10x = 10,572,189,789.74
  5. Step 5: Solve for x
    x = 10,572,189,789.74/86,942.10
  6. Step 6: Final answer
    x = 121,600.35

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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.