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Finding the Fourth Proportional to 128,028.98, 176,653.62 and 73,570.62

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Solution

The fourth proportional to 128,028.98, 176,653.62 and 73,570.62 is: 101,512.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,028.98 : 176,653.62 = 73,570.62 : x
  2. Step 2: Convert to fraction form
    128,028.98/176,653.62 = 73,570.62/x
  3. Step 3: Cross multiply
    128,028.98x = 176,653.62 × 73,570.62
  4. Step 4: Simplify right side
    128,028.98x = 12,996,516,348.64
  5. Step 5: Solve for x
    x = 12,996,516,348.64/128,028.98
  6. Step 6: Final answer
    x = 101,512.30

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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.