Home / 137,198.64-204,966.60-86,875.77

Finding the Fourth Proportional to 137,198.64, 204,966.60 and 86,875.77

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Solution

The fourth proportional to 137,198.64, 204,966.60 and 86,875.77 is: 129,787.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,198.64 : 204,966.60 = 86,875.77 : x
  2. Step 2: Convert to fraction form
    137,198.64/204,966.60 = 86,875.77/x
  3. Step 3: Cross multiply
    137,198.64x = 204,966.60 × 86,875.77
  4. Step 4: Simplify right side
    137,198.64x = 17,806,631,199.28
  5. Step 5: Solve for x
    x = 17,806,631,199.28/137,198.64
  6. Step 6: Final answer
    x = 129,787.23

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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.