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Finding the Fourth Proportional to 139,456.16, 209,182.40 and 34,276.08

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Solution

The fourth proportional to 139,456.16, 209,182.40 and 34,276.08 is: 51,413.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,456.16 : 209,182.40 = 34,276.08 : x
  2. Step 2: Convert to fraction form
    139,456.16/209,182.40 = 34,276.08/x
  3. Step 3: Cross multiply
    139,456.16x = 209,182.40 × 34,276.08
  4. Step 4: Simplify right side
    139,456.16x = 7,169,952,676.99
  5. Step 5: Solve for x
    x = 7,169,952,676.99/139,456.16
  6. Step 6: Final answer
    x = 51,413.67

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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.