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Finding the Fourth Proportional to 88,643.49, 132,446.08 and 85,542.81

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Solution

The fourth proportional to 88,643.49, 132,446.08 and 85,542.81 is: 127,813.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,643.49 : 132,446.08 = 85,542.81 : x
  2. Step 2: Convert to fraction form
    88,643.49/132,446.08 = 85,542.81/x
  3. Step 3: Cross multiply
    88,643.49x = 132,446.08 × 85,542.81
  4. Step 4: Simplify right side
    88,643.49x = 11,329,809,856.68
  5. Step 5: Solve for x
    x = 11,329,809,856.68/88,643.49
  6. Step 6: Final answer
    x = 127,813.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.