Home / 128,345.43-192,436.14-61,652.87

Finding the Fourth Proportional to 128,345.43, 192,436.14 and 61,652.87

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Solution

The fourth proportional to 128,345.43, 192,436.14 and 61,652.87 is: 92,439.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,345.43 : 192,436.14 = 61,652.87 : x
  2. Step 2: Convert to fraction form
    128,345.43/192,436.14 = 61,652.87/x
  3. Step 3: Cross multiply
    128,345.43x = 192,436.14 × 61,652.87
  4. Step 4: Simplify right side
    128,345.43x = 11,864,240,322.72
  5. Step 5: Solve for x
    x = 11,864,240,322.72/128,345.43
  6. Step 6: Final answer
    x = 92,439.91

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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.