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Finding the Fourth Proportional to 128,793.49, 192,252.13 and 119,296.01

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Solution

The fourth proportional to 128,793.49, 192,252.13 and 119,296.01 is: 178,075.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,793.49 : 192,252.13 = 119,296.01 : x
  2. Step 2: Convert to fraction form
    128,793.49/192,252.13 = 119,296.01/x
  3. Step 3: Cross multiply
    128,793.49x = 192,252.13 × 119,296.01
  4. Step 4: Simplify right side
    128,793.49x = 22,934,911,426.52
  5. Step 5: Solve for x
    x = 22,934,911,426.52/128,793.49
  6. Step 6: Final answer
    x = 178,075.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.