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Finding the Fourth Proportional to 128,203.68, 176,885.06 and 73,753.01

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Solution

The fourth proportional to 128,203.68, 176,885.06 and 73,753.01 is: 101,758.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,203.68 : 176,885.06 = 73,753.01 : x
  2. Step 2: Convert to fraction form
    128,203.68/176,885.06 = 73,753.01/x
  3. Step 3: Cross multiply
    128,203.68x = 176,885.06 × 73,753.01
  4. Step 4: Simplify right side
    128,203.68x = 13,045,804,345.84
  5. Step 5: Solve for x
    x = 13,045,804,345.84/128,203.68
  6. Step 6: Final answer
    x = 101,758.42

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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.