Home / 131,490.40-197,235.60-52,661.20

Finding the Fourth Proportional to 131,490.40, 197,235.60 and 52,661.20

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Solution

The fourth proportional to 131,490.40, 197,235.60 and 52,661.20 is: 78,991.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,490.40 : 197,235.60 = 52,661.20 : x
  2. Step 2: Convert to fraction form
    131,490.40/197,235.60 = 52,661.20/x
  3. Step 3: Cross multiply
    131,490.40x = 197,235.60 × 52,661.20
  4. Step 4: Simplify right side
    131,490.40x = 10,386,663,378.72
  5. Step 5: Solve for x
    x = 10,386,663,378.72/131,490.40
  6. Step 6: Final answer
    x = 78,991.80

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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.