Home / 165,431.40-248,276.70-76,695.90

Finding the Fourth Proportional to 165,431.40, 248,276.70 and 76,695.90

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Solution

The fourth proportional to 165,431.40, 248,276.70 and 76,695.90 is: 115,103.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,431.40 : 248,276.70 = 76,695.90 : x
  2. Step 2: Convert to fraction form
    165,431.40/248,276.70 = 76,695.90/x
  3. Step 3: Cross multiply
    165,431.40x = 248,276.70 × 76,695.90
  4. Step 4: Simplify right side
    165,431.40x = 19,041,804,955.53
  5. Step 5: Solve for x
    x = 19,041,804,955.53/165,431.40
  6. Step 6: Final answer
    x = 115,103.93

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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.