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Finding the Fourth Proportional to 128,033.58, 176,555.25 and 84,997.92

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Solution

The fourth proportional to 128,033.58, 176,555.25 and 84,997.92 is: 117,210.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,033.58 : 176,555.25 = 84,997.92 : x
  2. Step 2: Convert to fraction form
    128,033.58/176,555.25 = 84,997.92/x
  3. Step 3: Cross multiply
    128,033.58x = 176,555.25 × 84,997.92
  4. Step 4: Simplify right side
    128,033.58x = 15,006,829,015.08
  5. Step 5: Solve for x
    x = 15,006,829,015.08/128,033.58
  6. Step 6: Final answer
    x = 117,210.10

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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.