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Finding the Fourth Proportional to 128,510.28, 192,734.37 and 49,574.16

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Solution

The fourth proportional to 128,510.28, 192,734.37 and 49,574.16 is: 74,349.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,510.28 : 192,734.37 = 49,574.16 : x
  2. Step 2: Convert to fraction form
    128,510.28/192,734.37 = 49,574.16/x
  3. Step 3: Cross multiply
    128,510.28x = 192,734.37 × 49,574.16
  4. Step 4: Simplify right side
    128,510.28x = 9,554,644,495.88
  5. Step 5: Solve for x
    x = 9,554,644,495.88/128,510.28
  6. Step 6: Final answer
    x = 74,349.26

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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.