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Finding the Fourth Proportional to 128,200.95, 176,881.28 and 73,750.28

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Solution

The fourth proportional to 128,200.95, 176,881.28 and 73,750.28 is: 101,754.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,200.95 : 176,881.28 = 73,750.28 : x
  2. Step 2: Convert to fraction form
    128,200.95/176,881.28 = 73,750.28/x
  3. Step 3: Cross multiply
    128,200.95x = 176,881.28 × 73,750.28
  4. Step 4: Simplify right side
    128,200.95x = 13,045,042,673.60
  5. Step 5: Solve for x
    x = 13,045,042,673.60/128,200.95
  6. Step 6: Final answer
    x = 101,754.65

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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.