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Finding the Fourth Proportional to 128,173.32, 192,301.51 and 61,618.64

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Solution

The fourth proportional to 128,173.32, 192,301.51 and 61,618.64 is: 92,447.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,173.32 : 192,301.51 = 61,618.64 : x
  2. Step 2: Convert to fraction form
    128,173.32/192,301.51 = 61,618.64/x
  3. Step 3: Cross multiply
    128,173.32x = 192,301.51 × 61,618.64
  4. Step 4: Simplify right side
    128,173.32x = 11,849,357,516.15
  5. Step 5: Solve for x
    x = 11,849,357,516.15/128,173.32
  6. Step 6: Final answer
    x = 92,447.93

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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.