Home / 137,427.90-189,655.93-76,999.03

Finding the Fourth Proportional to 137,427.90, 189,655.93 and 76,999.03

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Solution

The fourth proportional to 137,427.90, 189,655.93 and 76,999.03 is: 106,261.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,427.90 : 189,655.93 = 76,999.03 : x
  2. Step 2: Convert to fraction form
    137,427.90/189,655.93 = 76,999.03/x
  3. Step 3: Cross multiply
    137,427.90x = 189,655.93 × 76,999.03
  4. Step 4: Simplify right side
    137,427.90x = 14,603,322,643.75
  5. Step 5: Solve for x
    x = 14,603,322,643.75/137,427.90
  6. Step 6: Final answer
    x = 106,261.70

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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.