Home / 86,972.99-119,123.42-81,866.34

Finding the Fourth Proportional to 86,972.99, 119,123.42 and 81,866.34

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Solution

The fourth proportional to 86,972.99, 119,123.42 and 81,866.34 is: 112,129.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,972.99 : 119,123.42 = 81,866.34 : x
  2. Step 2: Convert to fraction form
    86,972.99/119,123.42 = 81,866.34/x
  3. Step 3: Cross multiply
    86,972.99x = 119,123.42 × 81,866.34
  4. Step 4: Simplify right side
    86,972.99x = 9,752,197,994.35
  5. Step 5: Solve for x
    x = 9,752,197,994.35/86,972.99
  6. Step 6: Final answer
    x = 112,129.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.