Home / 109,865.80-164,993.10-84,966.40

Finding the Fourth Proportional to 109,865.80, 164,993.10 and 84,966.40

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Solution

The fourth proportional to 109,865.80, 164,993.10 and 84,966.40 is: 127,599.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,865.80 : 164,993.10 = 84,966.40 : x
  2. Step 2: Convert to fraction form
    109,865.80/164,993.10 = 84,966.40/x
  3. Step 3: Cross multiply
    109,865.80x = 164,993.10 × 84,966.40
  4. Step 4: Simplify right side
    109,865.80x = 14,018,869,731.84
  5. Step 5: Solve for x
    x = 14,018,869,731.84/109,865.80
  6. Step 6: Final answer
    x = 127,599.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.