Home / 137,290.02-189,438.26-76,863.20

Finding the Fourth Proportional to 137,290.02, 189,438.26 and 76,863.20

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Solution

The fourth proportional to 137,290.02, 189,438.26 and 76,863.20 is: 106,058.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,290.02 : 189,438.26 = 76,863.20 : x
  2. Step 2: Convert to fraction form
    137,290.02/189,438.26 = 76,863.20/x
  3. Step 3: Cross multiply
    137,290.02x = 189,438.26 × 76,863.20
  4. Step 4: Simplify right side
    137,290.02x = 14,560,830,866.03
  5. Step 5: Solve for x
    x = 14,560,830,866.03/137,290.02
  6. Step 6: Final answer
    x = 106,058.92

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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.