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Finding the Fourth Proportional to 128,027.98, 176,506.86 and 89,736.04

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Solution

The fourth proportional to 128,027.98, 176,506.86 and 89,736.04 is: 123,715.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,027.98 : 176,506.86 = 89,736.04 : x
  2. Step 2: Convert to fraction form
    128,027.98/176,506.86 = 89,736.04/x
  3. Step 3: Cross multiply
    128,027.98x = 176,506.86 × 89,736.04
  4. Step 4: Simplify right side
    128,027.98x = 15,839,026,649.23
  5. Step 5: Solve for x
    x = 15,839,026,649.23/128,027.98
  6. Step 6: Final answer
    x = 123,715.35

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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.