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Finding the Fourth Proportional to 128,230.84, 192,174.32 and 99,802.13

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Solution

The fourth proportional to 128,230.84, 192,174.32 and 99,802.13 is: 149,569.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,230.84 : 192,174.32 = 99,802.13 : x
  2. Step 2: Convert to fraction form
    128,230.84/192,174.32 = 99,802.13/x
  3. Step 3: Cross multiply
    128,230.84x = 192,174.32 × 99,802.13
  4. Step 4: Simplify right side
    128,230.84x = 19,179,406,467.30
  5. Step 5: Solve for x
    x = 19,179,406,467.30/128,230.84
  6. Step 6: Final answer
    x = 149,569.37

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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.