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Finding the Fourth Proportional to 128,225.60, 192,176.40 and 49,234.40

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Solution

The fourth proportional to 128,225.60, 192,176.40 and 49,234.40 is: 73,789.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,225.60 : 192,176.40 = 49,234.40 : x
  2. Step 2: Convert to fraction form
    128,225.60/192,176.40 = 49,234.40/x
  3. Step 3: Cross multiply
    128,225.60x = 192,176.40 × 49,234.40
  4. Step 4: Simplify right side
    128,225.60x = 9,461,689,748.16
  5. Step 5: Solve for x
    x = 9,461,689,748.16/128,225.60
  6. Step 6: Final answer
    x = 73,789.40

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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.