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Finding the Fourth Proportional to 128,090.61, 192,114.14 and 34,574.49

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Solution

The fourth proportional to 128,090.61, 192,114.14 and 34,574.49 is: 51,855.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,090.61 : 192,114.14 = 34,574.49 : x
  2. Step 2: Convert to fraction form
    128,090.61/192,114.14 = 34,574.49/x
  3. Step 3: Cross multiply
    128,090.61x = 192,114.14 × 34,574.49
  4. Step 4: Simplify right side
    128,090.61x = 6,642,248,239.42
  5. Step 5: Solve for x
    x = 6,642,248,239.42/128,090.61
  6. Step 6: Final answer
    x = 51,855.86

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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.