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Finding the Fourth Proportional to 128,526.54, 192,758.74 and 49,590.42

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Solution

The fourth proportional to 128,526.54, 192,758.74 and 49,590.42 is: 74,373.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,526.54 : 192,758.74 = 49,590.42 : x
  2. Step 2: Convert to fraction form
    128,526.54/192,758.74 = 49,590.42/x
  3. Step 3: Cross multiply
    128,526.54x = 192,758.74 × 49,590.42
  4. Step 4: Simplify right side
    128,526.54x = 9,558,986,875.27
  5. Step 5: Solve for x
    x = 9,558,986,875.27/128,526.54
  6. Step 6: Final answer
    x = 74,373.64

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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.