Home / 237,789.57-328,153.84-128,897.47

Finding the Fourth Proportional to 237,789.57, 328,153.84 and 128,897.47

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Solution

The fourth proportional to 237,789.57, 328,153.84 and 128,897.47 is: 177,880.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    237,789.57 : 328,153.84 = 128,897.47 : x
  2. Step 2: Convert to fraction form
    237,789.57/328,153.84 = 128,897.47/x
  3. Step 3: Cross multiply
    237,789.57x = 328,153.84 × 128,897.47
  4. Step 4: Simplify right side
    237,789.57x = 42,298,199,834.73
  5. Step 5: Solve for x
    x = 42,298,199,834.73/237,789.57
  6. Step 6: Final answer
    x = 177,880.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.