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Finding the Fourth Proportional to 128,025.73, 176,675.37 and 71,437.11

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Solution

The fourth proportional to 128,025.73, 176,675.37 and 71,437.11 is: 98,583.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,025.73 : 176,675.37 = 71,437.11 : x
  2. Step 2: Convert to fraction form
    128,025.73/176,675.37 = 71,437.11/x
  3. Step 3: Cross multiply
    128,025.73x = 176,675.37 × 71,437.11
  4. Step 4: Simplify right side
    128,025.73x = 12,621,177,840.98
  5. Step 5: Solve for x
    x = 12,621,177,840.98/128,025.73
  6. Step 6: Final answer
    x = 98,583.14

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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.