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Finding the Fourth Proportional to 81,695.70, 114,140.70 and 81,695.70

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Solution

The fourth proportional to 81,695.70, 114,140.70 and 81,695.70 is: 114,140.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,695.70 : 114,140.70 = 81,695.70 : x
  2. Step 2: Convert to fraction form
    81,695.70/114,140.70 = 81,695.70/x
  3. Step 3: Cross multiply
    81,695.70x = 114,140.70 × 81,695.70
  4. Step 4: Simplify right side
    81,695.70x = 9,324,804,384.99
  5. Step 5: Solve for x
    x = 9,324,804,384.99/81,695.70
  6. Step 6: Final answer
    x = 114,140.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.