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Finding the Fourth Proportional to 152,515.44, 210,473.52 and 87,983.64

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Solution

The fourth proportional to 152,515.44, 210,473.52 and 87,983.64 is: 121,418.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,515.44 : 210,473.52 = 87,983.64 : x
  2. Step 2: Convert to fraction form
    152,515.44/210,473.52 = 87,983.64/x
  3. Step 3: Cross multiply
    152,515.44x = 210,473.52 × 87,983.64
  4. Step 4: Simplify right side
    152,515.44x = 18,518,226,413.21
  5. Step 5: Solve for x
    x = 18,518,226,413.21/152,515.44
  6. Step 6: Final answer
    x = 121,418.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.