Home / 102,021.24-140,444.64-84,087.84

Finding the Fourth Proportional to 102,021.24, 140,444.64 and 84,087.84

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Solution

The fourth proportional to 102,021.24, 140,444.64 and 84,087.84 is: 115,757.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,021.24 : 140,444.64 = 84,087.84 : x
  2. Step 2: Convert to fraction form
    102,021.24/140,444.64 = 84,087.84/x
  3. Step 3: Cross multiply
    102,021.24x = 140,444.64 × 84,087.84
  4. Step 4: Simplify right side
    102,021.24x = 11,809,686,417.18
  5. Step 5: Solve for x
    x = 11,809,686,417.18/102,021.24
  6. Step 6: Final answer
    x = 115,757.13

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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.