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Finding the Fourth Proportional to 113,285.40, 169,928.10 and 39,413.40

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Solution

The fourth proportional to 113,285.40, 169,928.10 and 39,413.40 is: 59,120.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,285.40 : 169,928.10 = 39,413.40 : x
  2. Step 2: Convert to fraction form
    113,285.40/169,928.10 = 39,413.40/x
  3. Step 3: Cross multiply
    113,285.40x = 169,928.10 × 39,413.40
  4. Step 4: Simplify right side
    113,285.40x = 6,697,444,176.54
  5. Step 5: Solve for x
    x = 6,697,444,176.54/113,285.40
  6. Step 6: Final answer
    x = 59,120.10

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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.