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Finding the Fourth Proportional to 140,519.76, 210,779.91 and 57,413.76

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Solution

The fourth proportional to 140,519.76, 210,779.91 and 57,413.76 is: 86,120.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,519.76 : 210,779.91 = 57,413.76 : x
  2. Step 2: Convert to fraction form
    140,519.76/210,779.91 = 57,413.76/x
  3. Step 3: Cross multiply
    140,519.76x = 210,779.91 × 57,413.76
  4. Step 4: Simplify right side
    140,519.76x = 12,101,667,165.56
  5. Step 5: Solve for x
    x = 12,101,667,165.56/140,519.76
  6. Step 6: Final answer
    x = 86,120.75

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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.