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Finding the Fourth Proportional to 128,050.73, 176,719.79 and 70,701.11

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Solution

The fourth proportional to 128,050.73, 176,719.79 and 70,701.11 is: 97,572.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,050.73 : 176,719.79 = 70,701.11 : x
  2. Step 2: Convert to fraction form
    128,050.73/176,719.79 = 70,701.11/x
  3. Step 3: Cross multiply
    128,050.73x = 176,719.79 × 70,701.11
  4. Step 4: Simplify right side
    128,050.73x = 12,494,285,311.97
  5. Step 5: Solve for x
    x = 12,494,285,311.97/128,050.73
  6. Step 6: Final answer
    x = 97,572.93

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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.