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Finding the Fourth Proportional to 128,510.65, 192,778.88 and 44,259.71

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Solution

The fourth proportional to 128,510.65, 192,778.88 and 44,259.71 is: 66,394.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,510.65 : 192,778.88 = 44,259.71 : x
  2. Step 2: Convert to fraction form
    128,510.65/192,778.88 = 44,259.71/x
  3. Step 3: Cross multiply
    128,510.65x = 192,778.88 × 44,259.71
  4. Step 4: Simplify right side
    128,510.65x = 8,532,337,101.63
  5. Step 5: Solve for x
    x = 8,532,337,101.63/128,510.65
  6. Step 6: Final answer
    x = 66,394.01

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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.