Home / 145,134.20-217,413.30-127,815.80

Finding the Fourth Proportional to 145,134.20, 217,413.30 and 127,815.80

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Solution

The fourth proportional to 145,134.20, 217,413.30 and 127,815.80 is: 191,470.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,134.20 : 217,413.30 = 127,815.80 : x
  2. Step 2: Convert to fraction form
    145,134.20/217,413.30 = 127,815.80/x
  3. Step 3: Cross multiply
    145,134.20x = 217,413.30 × 127,815.80
  4. Step 4: Simplify right side
    145,134.20x = 27,788,854,870.14
  5. Step 5: Solve for x
    x = 27,788,854,870.14/145,134.20
  6. Step 6: Final answer
    x = 191,470.07

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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.